diff --git a/src/backends/julia/juliascriptloading.h b/src/backends/julia/juliascriptloading.h
index 803c3541..39637d2b 100644
--- a/src/backends/julia/juliascriptloading.h
+++ b/src/backends/julia/juliascriptloading.h
@@ -1,37 +1,37 @@
 /*
     This program is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License
     as published by the Free Software Foundation; either version 2
     of the License, or (at your option) any later version.
 
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software
     Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA  02110-1301, USA.
 
     ---
     Copyright (C) 2016 Ivan Lakhtanov <ivan.lakhtanov@gmail.com>
  */
 #pragma once
 
 #include <QFile>
 #include <QStandardPaths>
 
 inline QString loadScript(const QString &scriptName)
 {
     QFile text(
         QStandardPaths::locate(
-            QStandardPaths::GenericDataLocation,
+            QStandardPaths::AppDataLocation,
             QString::fromLatin1(
-                "cantor/juliabackend/scripts/%1.jl"
+                "juliabackend/scripts/%1.jl"
             ).arg(scriptName)
         )
     );
     text.open(QIODevice::ReadOnly);
     return QString::fromLatin1(text.readAll());
 }
diff --git a/src/backends/maxima/maximasession.cpp b/src/backends/maxima/maximasession.cpp
index c12ec3fe..ebd24882 100644
--- a/src/backends/maxima/maximasession.cpp
+++ b/src/backends/maxima/maximasession.cpp
@@ -1,332 +1,334 @@
 /*
     This program is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License
     as published by the Free Software Foundation; either version 2
     of the License, or (at your option) any later version.
 
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software
     Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA  02110-1301, USA.
 
     ---
     Copyright (C) 2009-2012 Alexander Rieder <alexanderrieder@gmail.com>
     Copyright (C) 2017-2018 Alexander Semke (alexander.semke@web.de)
  */
 
 #include "maximasession.h"
 #include "maximaexpression.h"
 #include "maximacompletionobject.h"
 #include "maximasyntaxhelpobject.h"
 #include "maximahighlighter.h"
 #include "maximavariablemodel.h"
 #include "result.h"
 #include "settings.h"
 
 #include <QDebug>
 #include <QProcess>
 #include <QTimer>
+#include <QStandardPaths>
 
 #include <KMessageBox>
 #include <KLocalizedString>
 
 #ifndef Q_OS_WIN
 #include <signal.h>
 #endif
 
 
 //NOTE: the \\s in the expressions is needed, because Maxima seems to sometimes insert newlines/spaces between the letters
 //maybe this is caused by some behaviour if the Prompt is split into multiple "readStdout" calls
 //the Expressions are encapsulated in () to allow capturing for the text
 const QRegExp MaximaSession::MaximaOutputPrompt=QRegExp(QLatin1String("(\\(\\s*%\\s*o\\s*[0-9\\s]*\\))")); //Text, maxima outputs, before any output
 const QRegExp MaximaSession::MaximaInputPrompt = QRegExp(QLatin1String("(\\(\\s*%\\s*i\\s*[0-9\\s]*\\))"));
 
 
 MaximaSession::MaximaSession( Cantor::Backend* backend ) : Session(backend),
     m_process(nullptr),
     m_justRestarted(false)
 {
     setVariableModel(new MaximaVariableModel(this));
 }
 
 void MaximaSession::login()
 {
     qDebug()<<"login";
 
     if (m_process)
         return; //TODO: why do we call login() again?!?
 
     emit loginStarted();
     QStringList arguments;
     arguments << QLatin1String("--quiet"); //Suppress Maxima start-up message
-    const QString initFile = QStandardPaths::locate(QStandardPaths::GenericDataLocation, QLatin1String("cantor/maximabackend/cantor-initmaxima.lisp"));
+    const QString& initFile = QStandardPaths::locate(QStandardPaths::AppDataLocation, QLatin1String("maximabackend/cantor-initmaxima.lisp"));
+    qDebug() << "founded init file: " << initFile;
     arguments << QLatin1String("--init-lisp=") + initFile; //Set the name of the Lisp initialization file
 
     m_process = new QProcess(this);
     m_process->start(MaximaSettings::self()->path().toLocalFile(), arguments);
     m_process->waitForStarted();
 
     QString input;
     // Wait until first maxima prompt
     while (!input.contains(QLatin1String("</cantor-prompt>")))
     {
         m_process->waitForReadyRead();
         input += QString::fromLatin1(m_process->readAllStandardOutput());
         qDebug() << input;
     }
 
     connect(m_process, SIGNAL(finished(int,QProcess::ExitStatus)), this, SLOT(restartMaxima()));
     connect(m_process, SIGNAL(readyReadStandardOutput()), this, SLOT(readStdOut()));
     connect(m_process, SIGNAL(readyReadStandardError()), this, SLOT(readStdErr()));
     connect(m_process, SIGNAL(error(QProcess::ProcessError)), this, SLOT(reportProcessError(QProcess::ProcessError)));
 
     if(!MaximaSettings::self()->autorunScripts().isEmpty()){
         QString autorunScripts = MaximaSettings::self()->autorunScripts().join(QLatin1String(";"));
         autorunScripts.append(QLatin1String(";kill(labels)")); // Reset labels after running autorun scripts
         evaluateExpression(autorunScripts, MaximaExpression::DeleteOnFinish, true);
         updateVariables();
     }
 
     changeStatus(Session::Done);
     emit loginDone();
     qDebug()<<"login done";
 }
 
 void MaximaSession::logout()
 {
     qDebug()<<"logout";
 
     if(!m_process)
         return;
 
     disconnect(m_process, nullptr, this, nullptr);
 
 //     if(status()==Cantor::Session::Running)
         //TODO: terminate the running expressions first
 
     write(QLatin1String("quit();\n"));
     qDebug()<<"waiting for maxima to finish";
     m_process->waitForFinished();
     qDebug()<<"maxima exit finished";
 
     if(m_process->state() != QProcess::NotRunning)
     {
         m_process->kill();
         qDebug()<<"maxima still running, process kill enforced";
     }
 
     expressionQueue().clear();
     delete m_process;
     m_process = nullptr;
     variableModel()->clearVariables();
     variableModel()->clearFunctions();
 
     changeStatus(Status::Disable);
 
     qDebug()<<"logout done";
 }
 
 Cantor::Expression* MaximaSession::evaluateExpression(const QString& cmd, Cantor::Expression::FinishingBehavior behave, bool internal)
 {
     qDebug() << "evaluating: " << cmd;
     MaximaExpression* expr = new MaximaExpression(this, internal);
     expr->setFinishingBehavior(behave);
     expr->setCommand(cmd);
     expr->evaluate();
 
     return expr;
 }
 
 void MaximaSession::readStdErr()
 {
    qDebug()<<"reading stdErr";
    if (!m_process)
        return;
    QString out=QLatin1String(m_process->readAllStandardError());
 
    if(expressionQueue().size()>0)
    {
        MaximaExpression* expr = static_cast<MaximaExpression*>(expressionQueue().first());
        expr->parseError(out);
    }
 }
 
 void MaximaSession::readStdOut()
 {
     QString out = QLatin1String(m_process->readAllStandardOutput());
     m_cache += out;
 
     //collect the multi-line output until Maxima has finished the calculation and returns a new promt
     if ( !out.contains(QLatin1String("</cantor-prompt>")) )
         return;
 
     if(expressionQueue().isEmpty())
     {
         //queue is empty, interrupt was called, nothing to do here
         qDebug()<<m_cache;
         m_cache.clear();
         return;
     }
 
     MaximaExpression* expr = static_cast<MaximaExpression*>(expressionQueue().first());
     if (!expr)
         return; //should never happen
 
     qDebug()<<"output: " << m_cache;
     expr->parseOutput(m_cache);
     m_cache.clear();
 }
 
 void MaximaSession::reportProcessError(QProcess::ProcessError e)
 {
     qDebug()<<"process error"<<e;
     if(e==QProcess::FailedToStart)
     {
         changeStatus(Cantor::Session::Done);
         emit error(i18n("Failed to start Maxima"));
     }
 }
 
 void MaximaSession::currentExpressionChangedStatus(Cantor::Expression::Status status)
 {
     Cantor::Expression* expression = expressionQueue().first();
     const QString& cmd = expression->command();
     qDebug() << "expression status changed: command = " << expression->command() << ", status = " << status;
 
     switch (status)
     {
     case Cantor::Expression::Done:
     case Cantor::Expression::Error:
         qDebug()<<"################################## EXPRESSION END ###############################################";
         disconnect(expression, SIGNAL(statusChanged(Cantor::Expression::Status)),
             this, SLOT(currentExpressionChangedStatus(Cantor::Expression::Status)));
 
         finishFirstExpression();
         break;
 
     default:
         break;
     }
 }
 
 void MaximaSession::runFirstExpression()
 {
     qDebug()<<"running next expression";
     if (!m_process)
         return;
 
     if(!expressionQueue().isEmpty())
     {
         MaximaExpression* expr = static_cast<MaximaExpression*>(expressionQueue().first());
         QString command=expr->internalCommand();
         connect(expr, SIGNAL(statusChanged(Cantor::Expression::Status)), this, SLOT(currentExpressionChangedStatus(Cantor::Expression::Status)));
 
         expr->setStatus(Cantor::Expression::Computing);
         if(command.isEmpty())
         {
             qDebug()<<"empty command";
             expr->forceDone();
         }
         else
         {
             m_cache.clear();
             write(command + QLatin1Char('\n'));
         }
     }
 }
 
 void MaximaSession::interrupt()
 {
     if(!expressionQueue().isEmpty())
     {
         qDebug()<<"interrupting " << expressionQueue().first()->command();
         if(m_process->state() != QProcess::NotRunning)
         {
 #ifndef Q_OS_WIN
             const int pid=m_process->pid();
             kill(pid, SIGINT);
 #else
             ; //TODO: interrupt the process on windows
 #endif
         }
        foreach (Cantor::Expression* expression, expressionQueue())
             expression->setStatus(Cantor::Expression::Interrupted);
         expressionQueue().clear();
 
         qDebug()<<"done interrupting";
     }
 
     changeStatus(Cantor::Session::Done);
     m_cache.clear();
 }
 
 void MaximaSession::sendInputToProcess(const QString& input)
 {
     write(input);
 }
 
 void MaximaSession::restartMaxima()
 {
     qDebug()<<"restarting maxima cooldown: "<<m_justRestarted;
 
     if(!m_justRestarted)
     {
         emit error(i18n("Maxima crashed. restarting..."));
         //remove the command that caused maxima to crash (to avoid infinite loops)
         if(!expressionQueue().isEmpty())
             expressionQueue().removeFirst();
 
         m_justRestarted=true;
         QTimer::singleShot(1000, this, SLOT(restartsCooledDown()));
 
         disconnect(m_process, SIGNAL(finished(int,QProcess::ExitStatus)), this, SLOT(restartMaxima()));
         login();
     }else
     {
         if(!expressionQueue().isEmpty())
             expressionQueue().removeFirst();
         KMessageBox::error(nullptr, i18n("Maxima crashed twice within a short time. Stopping to try starting"), i18n("Error - Cantor"));
     }
 }
 
 void MaximaSession::restartsCooledDown()
 {
     qDebug()<<"maxima restart cooldown";
     m_justRestarted=false;
 }
 
 void MaximaSession::setTypesettingEnabled(bool enable)
 {
     //we use the lisp command to set the variable, as those commands
     //don't mess with the labels and history
     const QString& val=QLatin1String((enable==true ? "t":"nil"));
     evaluateExpression(QString::fromLatin1(":lisp(setf $display2d %1)").arg(val), Cantor::Expression::DeleteOnFinish, true);
 
     Cantor::Session::setTypesettingEnabled(enable);
 }
 
 Cantor::CompletionObject* MaximaSession::completionFor(const QString& command, int index)
 {
     return new MaximaCompletionObject(command, index, this);
 }
 
 Cantor::SyntaxHelpObject* MaximaSession::syntaxHelpFor(const QString& command)
 {
     return new MaximaSyntaxHelpObject(command, this);
 }
 
 QSyntaxHighlighter* MaximaSession::syntaxHighlighter(QObject* parent)
 {
     return new MaximaHighlighter(parent, this);
 }
 
 void MaximaSession::write(const QString& exp) {
     qDebug()<<"################################## EXPRESSION START ###############################################";
     qDebug()<<"sending expression to maxima process: " << exp;
     m_process->write(exp.toUtf8());
 }
diff --git a/src/backends/octave/CMakeLists.txt b/src/backends/octave/CMakeLists.txt
index bc178d1e..8012647c 100644
--- a/src/backends/octave/CMakeLists.txt
+++ b/src/backends/octave/CMakeLists.txt
@@ -1,44 +1,41 @@
 set( OctaveBackend_SRCS
   octavebackend.cpp
   octavesession.cpp
   octaveexpression.cpp
   octaveextensions.cpp
   octavehighlighter.cpp
   octavekeywords.cpp
   octavecompletionobject.cpp
   octavesyntaxhelpobject.cpp
   octavevariablemodel.cpp
 )
 
-set (OCTAVE_SCRIPT_INSTALL_DIR ${KDE_INSTALL_DATADIR}/cantor/octavebackend)
-set (OCTAVE_SCRIPT_INSTALL_PATH ${CMAKE_INSTALL_PREFIX}/${OCTAVE_SCRIPT_INSTALL_DIR}/)
-configure_file (octave-backend-config.h.cmake ${CMAKE_CURRENT_BINARY_DIR}/octave-backend-config.h )
 add_subdirectory(scripts)
 
 kconfig_add_kcfg_files(OctaveBackend_SRCS settings.kcfgc)
 install(FILES octavebackend.kcfg DESTINATION ${KDE_INSTALL_KCFGDIR})
 
 ki18n_wrap_ui(OctaveBackend_SRCS settings.ui)
 
 add_backend(octavebackend ${OctaveBackend_SRCS})
 
 target_link_libraries(cantor_octavebackend
   KF5::KIOCore
   KF5::ConfigCore
   KF5::ConfigGui
   KF5::SyntaxHighlighting
 )
 
 
 if(BUILD_TESTING)
   add_executable( testoctave testoctave.cpp)
   add_test(testoctave testoctave)
   ecm_mark_as_test(testoctave)
   target_link_libraries( testoctave
     Qt5::Test
     cantorlibs
     cantortest
   )
 endif(BUILD_TESTING)
 
 install(FILES cantor_octave.knsrc  DESTINATION  ${KDE_INSTALL_CONFDIR} )
diff --git a/src/backends/octave/octave-backend-config.h.cmake b/src/backends/octave/octave-backend-config.h.cmake
deleted file mode 100644
index 025cce8b..00000000
--- a/src/backends/octave/octave-backend-config.h.cmake
+++ /dev/null
@@ -1 +0,0 @@
-const QString octaveScriptInstallDir = QLatin1String("${OCTAVE_SCRIPT_INSTALL_PATH}");
diff --git a/src/backends/octave/octavesession.cpp b/src/backends/octave/octavesession.cpp
index 7c75f895..c556f1e2 100644
--- a/src/backends/octave/octavesession.cpp
+++ b/src/backends/octave/octavesession.cpp
@@ -1,369 +1,369 @@
 /*
     Copyright (C) 2010 Miha Čančula <miha.cancula@gmail.com>
 
     This program is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License
     as published by the Free Software Foundation; either version 2
     of the License, or (at your option) any later version.
 
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software
     Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA  02110-1301, USA.
 */
 
 #include "octavesession.h"
 #include "octaveexpression.h"
 #include "octavecompletionobject.h"
 #include "octavesyntaxhelpobject.h"
 #include "octavehighlighter.h"
 #include "result.h"
 #include "textresult.h"
 
 #include "settings.h"
-#include "octave-backend-config.h"
 #include "octavehighlighter.h"
 
 #include <KProcess>
 #include <KDirWatch>
 #include <KLocalizedString>
 
 #include <QTimer>
 #include <QFile>
 
 #ifndef Q_OS_WIN
 #include <signal.h>
 #endif
 
 #include "octavevariablemodel.h"
 
 const QRegExp OctaveSession::PROMPT_UNCHANGEABLE_COMMAND = QRegExp(QLatin1String("(,|;)+"));
 
 OctaveSession::OctaveSession ( Cantor::Backend* backend ) : Session ( backend),
 m_process(nullptr),
 m_prompt(QLatin1String("CANTOR_OCTAVE_BACKEND_PROMPT:([0-9]+)> ")),
 m_subprompt(QLatin1String("CANTOR_OCTAVE_BACKEND_SUBPROMPT:([0-9]+)> ")),
 m_previousPromptNumber(1),
 m_watch(nullptr),
 m_syntaxError(false)
 {
     setVariableModel(new OctaveVariableModel(this));
-    qDebug() << octaveScriptInstallDir;
 }
 
 void OctaveSession::login()
 {
     qDebug() << "login";
     emit loginStarted();
 
     m_process = new KProcess ( this );
     QStringList args;
     args << QLatin1String("--silent");
     args << QLatin1String("--interactive");
     args << QLatin1String("--persist");
 
     // Setting prompt and subprompt
     args << QLatin1String("--eval");
     args << QLatin1String("PS1('CANTOR_OCTAVE_BACKEND_PROMPT:\\#> ');");
     args << QLatin1String("--eval");
     args << QLatin1String("PS2('CANTOR_OCTAVE_BACKEND_SUBPROMPT:\\#> ');");
 
     // Add the cantor script directory to search path
+    const QString& octaveScriptInstallDir = QStandardPaths::locate(QStandardPaths::AppDataLocation, QLatin1String("octavebackend"), QStandardPaths::LocateDirectory);
+    qDebug() << "using octaveScriptInstallDir: " << octaveScriptInstallDir;
     args << QLatin1String("--eval");
     args << QString::fromLatin1("addpath \"%1\";").arg(octaveScriptInstallDir);
 
     // Print the temp dir, used for plot files
     args << QLatin1String("--eval");
     args << QLatin1String("printf('%s\\n', ['____TMP_DIR____ = ' tempdir]);");
 
     // Do not show extra text in help commands
     args << QLatin1String("--eval");
     args << QLatin1String("suppress_verbose_help_message(1);");
 
     if (OctaveSettings::integratePlots())
     {
         // Do not show the popup when plotting, rather only print to a file
         args << QLatin1String("--eval");
         args << QLatin1String("set (0, \"defaultfigurevisible\",\"off\");");
         args << QLatin1String("--eval");
         args << QLatin1String("graphics_toolkit gnuplot;");
     }
     else
     {
         args << QLatin1String("--eval");
         args << QLatin1String("set (0, \"defaultfigurevisible\",\"on\");");
     }
 
     if (OctaveSettings::integratePlots())
     {
         m_watch = new KDirWatch(this);
         m_watch->setObjectName(QLatin1String("OctaveDirWatch"));
         connect (m_watch, SIGNAL(dirty(QString)), SLOT(plotFileChanged(QString)) );
     }
 
     m_process->setProgram ( OctaveSettings::path().toLocalFile(), args );
     qDebug() << "starting " << m_process->program();
     m_process->setOutputChannelMode ( KProcess::SeparateChannels );
     m_process->start();
     m_process->waitForStarted();
 
     // Got tmp dir
     bool loginFinished = false;
     QString input;
     while (!loginFinished)
     {
         m_process->waitForReadyRead();
         input += QString::fromLatin1(m_process->readAllStandardOutput());
         qDebug() << "login input: " << input;
         if (input.contains(QLatin1String("____TMP_DIR____")))
             {
                 m_tempDir = input;
                 m_tempDir.remove(0,18);
                 m_tempDir.chop(1); // isolate the tempDir's location
                 qDebug() << "Got temporary file dir:" << m_tempDir;
                 if (m_watch)
                 {
                     m_watch->addDir(m_tempDir, KDirWatch::WatchFiles);
                 }
                 loginFinished = true;
             }
     }
 
     connect ( m_process, SIGNAL (readyReadStandardOutput()), SLOT (readOutput()) );
     connect ( m_process, SIGNAL (readyReadStandardError()), SLOT (readError()) );
     connect ( m_process, SIGNAL (error(QProcess::ProcessError)), SLOT (processError()) );
 
     if(!OctaveSettings::self()->autorunScripts().isEmpty()){
         QString autorunScripts = OctaveSettings::self()->autorunScripts().join(QLatin1String("\n"));
 
         evaluateExpression(autorunScripts, OctaveExpression::DeleteOnFinish, true);
         updateVariables();
     }
 
     changeStatus(Cantor::Session::Done);
     emit loginDone();
     qDebug()<<"login done";
 }
 
 void OctaveSession::logout()
 {
     qDebug()<<"logout";
 
     if(!m_process)
         return;
 
     disconnect(m_process, nullptr, this, nullptr);
 
     // if(status()==Cantor::Session::Running)
     // TODO: terminate the running expressions first
 
     m_process->write("exit\n");
     qDebug()<<"waiting for octave to finish";
     m_process->waitForFinished();
     qDebug()<<"octave exit finished";
 
     if(m_process->state() != QProcess::NotRunning)
     {
         m_process->kill();
         qDebug()<<"octave still running, process kill enforced";
     }
 
     expressionQueue().clear();
     delete m_process;
     m_process = nullptr;
 
 
     m_tempDir.clear();
     m_output.clear();
     m_previousPromptNumber = 1;
 
     variableModel()->clearVariables();
 
     changeStatus(Status::Disable);
 
     qDebug()<<"logout done";
 }
 
 void OctaveSession::interrupt()
 {
     if(!expressionQueue().isEmpty())
     {
         qDebug()<<"interrupting " << expressionQueue().first()->command();
         if(m_process->state() != QProcess::NotRunning)
         {
 #ifndef Q_OS_WIN
             const int pid=m_process->pid();
             kill(pid, SIGINT);
 #else
             ; //TODO: interrupt the process on windows
 #endif
         }
         foreach (Cantor::Expression* expression, expressionQueue())
             expression->setStatus(Cantor::Expression::Interrupted);
         expressionQueue().clear();
 
         // Cleanup inner state and call octave prompt printing
         // If we move this code for interruption to Session, we need add function for
         // cleaning before setting Done status
         m_output.clear();
         m_process->write("\n");
 
         qDebug()<<"done interrupting";
     }
 
     changeStatus(Cantor::Session::Done);
 }
 
 void OctaveSession::processError()
 {
     qDebug() << "processError";
     emit error(m_process->errorString());
 }
 
 Cantor::Expression* OctaveSession::evaluateExpression ( const QString& command, Cantor::Expression::FinishingBehavior finishingBehavior, bool internal )
 {
     qDebug() << "evaluating: " << command;
     OctaveExpression* expression = new OctaveExpression ( this, internal);
     expression->setCommand ( command );
     expression->setFinishingBehavior ( finishingBehavior );
     expression->evaluate();
 
     return expression;
 }
 
 void OctaveSession::runFirstExpression()
 {
     OctaveExpression* expression = static_cast<OctaveExpression*>(expressionQueue().first());
     connect(expression, SIGNAL(statusChanged(Cantor::Expression::Status)), this, SLOT(currentExpressionStatusChanged(Cantor::Expression::Status)));
     QString command = expression->internalCommand();
     expression->setStatus(Cantor::Expression::Computing);
     if (isDoNothingCommand(command))
         expression->setStatus(Cantor::Expression::Done);
     else
     {
         m_process->write ( command.toLocal8Bit() );
     }
 }
 
 void OctaveSession::readError()
 {
     qDebug() << "readError";
     QString error = QString::fromLocal8Bit(m_process->readAllStandardError());
     if (!expressionQueue().isEmpty() && !error.isEmpty())
     {
         OctaveExpression* const exp = static_cast<OctaveExpression*>(expressionQueue().first());
         if (m_syntaxError)
         {
             m_syntaxError = false;
             exp->parseError(i18n("Syntax Error"));
         }
         else
             exp->parseError(error);
 
         m_output.clear();
     }
 }
 
 void OctaveSession::readOutput()
 {
     qDebug() << "readOutput";
     while (m_process->bytesAvailable() > 0)
     {
         QString line = QString::fromLocal8Bit(m_process->readLine());
         qDebug()<<"start parsing " << "  " << line;
         if (line.contains(m_prompt))
         {
             const int promptNumber = m_prompt.cap(1).toInt();
             if (!expressionQueue().isEmpty())
             {
                 const QString& command = expressionQueue().first()->command();
                 if (m_previousPromptNumber + 1 == promptNumber || isSpecialOctaveCommand(command))
                 {
                     if (!expressionQueue().isEmpty())
                         static_cast<OctaveExpression*>(expressionQueue().first())->parseOutput(m_output);
                 }
                 else
                 {
                     // Error command don't increase octave prompt number (usually, but not always)
                     readError();
                 }
             }
             m_previousPromptNumber = promptNumber;
             m_output.clear();
         }
         else if (line.contains(m_subprompt) && m_subprompt.cap(1).toInt() == m_previousPromptNumber)
         {
             // User don't write finished octave statement (for example, write 'a = [1,2, ' only), so
             // octave print subprompt and waits input finish.
             m_syntaxError = true;
             qDebug() << "subprompt catch";
             m_process->write(")]'\"\n"); // forse exit from subprompt
             m_output.clear();
         }
         else
             m_output += line;
     }
 }
 
 void OctaveSession::currentExpressionStatusChanged(Cantor::Expression::Status status)
 {
     qDebug() << "currentExpressionStatusChanged";
     switch (status)
     {
     case Cantor::Expression::Done:
     case Cantor::Expression::Error:
         finishFirstExpression();
         break;
 
     default:
         break;
     }
 }
 
 void OctaveSession::plotFileChanged(const QString& filename)
 {
     if (!QFile::exists(filename) || !filename.split(QLatin1Char('/')).last().contains(QLatin1String("c-ob-")))
     {
         return;
     }
 
     if (!expressionQueue().isEmpty())
     {
         static_cast<OctaveExpression*>(expressionQueue().first())->parsePlotFile(filename);
     }
 }
 
 Cantor::CompletionObject* OctaveSession::completionFor ( const QString& cmd, int index )
 {
     return new OctaveCompletionObject ( cmd, index, this );
 }
 
 Cantor::SyntaxHelpObject* OctaveSession::syntaxHelpFor ( const QString& cmd )
 {
     return new OctaveSyntaxHelpObject ( cmd, this );
 }
 
 QSyntaxHighlighter* OctaveSession::syntaxHighlighter ( QObject* parent )
 {
     return new OctaveHighlighter ( parent, this );
 }
 
 void OctaveSession::runSpecificCommands()
 {
     m_process->write("figure(1,'visible','off')");
 }
 
 bool OctaveSession::isDoNothingCommand(const QString& command)
 {
     return PROMPT_UNCHANGEABLE_COMMAND.exactMatch(command) || command.isEmpty() || command == QLatin1String("\n");
 }
 
 bool OctaveSession::isSpecialOctaveCommand(const QString& command)
 {
     return command.contains(QLatin1String("completion_matches"));
 }
diff --git a/src/backends/octave/scripts/CMakeLists.txt b/src/backends/octave/scripts/CMakeLists.txt
index 4e33c0d8..c08c37f6 100644
--- a/src/backends/octave/scripts/CMakeLists.txt
+++ b/src/backends/octave/scripts/CMakeLists.txt
@@ -1,11 +1,12 @@
 if (WITH_EPS)
 set(PLOT_FILE_FORMAT epsc)
 set(PLOT_FILE_SUFFIX eps)
 else (WITH_EPS)
 set(PLOT_FILE_FORMAT png)
 set(PLOT_FILE_SUFFIX png)
 endif (WITH_EPS)
 
 configure_file(cantor_print.m.in ${CMAKE_CURRENT_BINARY_DIR}/cantor_print.m)
-install( FILES cantor_eigenvectors.m cantor_plot2d.m cantor_plot3d.m ${CMAKE_CURRENT_BINARY_DIR}/cantor_print.m DESTINATION  ${OCTAVE_SCRIPT_INSTALL_DIR} )
+
+install( FILES cantor_eigenvectors.m cantor_plot2d.m cantor_plot3d.m ${CMAKE_CURRENT_BINARY_DIR}/cantor_print.m DESTINATION  ${KDE_INSTALL_DATADIR}/cantor/octavebackend )
 
diff --git a/src/backends/sage/sagesession.cpp b/src/backends/sage/sagesession.cpp
index 88357c5e..00ab3db1 100644
--- a/src/backends/sage/sagesession.cpp
+++ b/src/backends/sage/sagesession.cpp
@@ -1,502 +1,502 @@
 /*
     This program is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License
     as published by the Free Software Foundation; either version 2
     of the License, or (at your option) any later version.
 
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software
     Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA  02110-1301, USA.
 
     ---
     Copyright (C) 2009 Alexander Rieder <alexanderrieder@gmail.com>
  */
 
 #include "sagesession.h"
 #include "sageexpression.h"
 #include "sagecompletionobject.h"
 #include "sagehighlighter.h"
 
 #include <QDebug>
 #include <QRegularExpression>
 #include <KPtyProcess>
 #include <KPtyDevice>
 #include <KLocalizedString>
 #include <KMessageBox>
 #include "settings.h"
 
 #ifndef Q_OS_WIN
 #include <signal.h>
 #endif
 
 const QByteArray SageSession::SagePrompt="sage: "; //Text, sage outputs after each command
 const QByteArray SageSession::SageAlternativePrompt="....: "; //Text, sage outputs when it expects further input
 
 //some commands that are run after login
 static QByteArray initCmd="os.environ['PAGER'] = 'cat'                     \n "\
                            "sage.misc.pager.EMBEDDED_MODE = True           \n "\
                            "sage.misc.viewer.BROWSER=''                    \n "\
                            "sage.misc.viewer.viewer.png_viewer('false')         \n" \
                            "sage.plot.plot3d.base.SHOW_DEFAULTS['viewer'] = 'tachyon' \n"\
                            "sage.misc.latex.EMBEDDED_MODE = True           \n "\
                            "os.environ['PAGER'] = 'cat'                    \n "\
                            "%colors nocolor                                \n "\
                            "print '____TMP_DIR____', sage.misc.misc.SAGE_TMP\n";
 
 static QByteArray newInitCmd=
     "__CANTOR_IPYTHON_SHELL__=get_ipython()   \n "\
     "__CANTOR_IPYTHON_SHELL__.autoindent=False\n ";
 
 static QByteArray legacyInitCmd=
     "__CANTOR_IPYTHON_SHELL__=__IPYTHON__   \n "  \
     "__CANTOR_IPYTHON_SHELL__.autoindent=False\n ";
 
 static QByteArray endOfInitMarker="print '____END_OF_INIT____'\n ";
 
 
 
 SageSession::VersionInfo::VersionInfo(int major, int minor)
 {
     m_major=major;
     m_minor=minor;
 }
 
 int SageSession::VersionInfo::majorVersion() const
 {
     return m_major;
 }
 
 int SageSession::VersionInfo::minorVersion() const
 {
     return m_minor;
 }
 
 bool SageSession::VersionInfo::operator==(VersionInfo other) const
 {
     return m_major==other.m_major&&m_minor==other.m_minor;
 }
 
 bool SageSession::VersionInfo::operator<(VersionInfo other) const
 {
     return (m_major!= -1 && other.m_major==-1) ||
         ( ((m_major!=-1 && other.m_major!=-1) || (m_major==other.m_major && m_major==-1) ) && ( m_major<other.m_major||(m_major==other.m_major&&m_minor<other.m_minor) ) );
 }
 
 bool SageSession::VersionInfo::operator<=(VersionInfo other) const
 {
     return (*this < other)||(*this == other);
 }
 
 bool SageSession::VersionInfo::operator>(SageSession::VersionInfo other) const
 {
     return !( (*this <= other ));
 }
 
 bool SageSession::VersionInfo::operator>=(SageSession::VersionInfo other) const
 {
     return !( *this < other);
 }
 
 SageSession::SageSession(Cantor::Backend* backend) : Session(backend),
 m_process(nullptr),
 m_isInitialized(false),
 m_waitingForPrompt(false),
 m_haveSentInitCmd(false)
 {
     connect( &m_dirWatch, SIGNAL(created(QString)), this, SLOT(fileCreated(QString)) );
 }
 
 void SageSession::login()
 {
     qDebug()<<"login";
     emit loginStarted();
 
     m_process=new KPtyProcess(this);
     updateSageVersion();
     const QString& sageExecFile = SageSettings::self()->path().toLocalFile();
     if (false)
 //  Reenable when https://trac.sagemath.org/ticket/25363 is merged
 //  if (m_sageVersion >= SageSession::VersionInfo(8, 4))
         m_process->setProgram(sageExecFile, QStringList() << QLatin1String("--simple-prompt"));
     else
         {
-        const QString& sageStartScript = QStandardPaths::locate(QStandardPaths::GenericDataLocation, QLatin1String("cantor/sagebackend/cantor-execsage"));
+        const QString& sageStartScript = QStandardPaths::locate(QStandardPaths::AppDataLocation, QLatin1String("sagebackend/cantor-execsage"));
         m_process->setProgram(sageStartScript, QStringList(sageExecFile));
         }
 
     m_process->setOutputChannelMode(KProcess::SeparateChannels);
     m_process->setPtyChannels(KPtyProcess::AllChannels);
     m_process->pty()->setEcho(false);
 
     connect(m_process->pty(), SIGNAL(readyRead()), this, SLOT(readStdOut()));
     connect(m_process, SIGNAL(readyReadStandardError()), this, SLOT(readStdErr()));
     connect(m_process, SIGNAL(finished(int,QProcess::ExitStatus)), this, SLOT(processFinished(int,QProcess::ExitStatus)));
     connect(m_process, SIGNAL(error(QProcess::ProcessError)), this, SLOT(reportProcessError(QProcess::ProcessError)));
     m_process->start();
     m_process->waitForStarted();
 
     m_process->pty()->write(initCmd);
 
     if(!SageSettings::self()->autorunScripts().isEmpty()){
         QString autorunScripts = SageSettings::self()->autorunScripts().join(QLatin1String("\n"));
         evaluateExpression(autorunScripts, SageExpression::DeleteOnFinish, true);
     }
 
     changeStatus(Session::Done);
     emit loginDone();
 }
 
 void SageSession::logout()
 {
     qDebug()<<"logout";
 
     disconnect(m_process, SIGNAL(finished(int,QProcess::ExitStatus)), this, SLOT(processFinished(int,QProcess::ExitStatus)));
     m_process->pty()->write("exit\n");
 
     m_process->kill();
     //Run sage-cleaner to kill all the orphans
     KProcess::startDetached(SageSettings::self()->path().toLocalFile(),QStringList()<<QLatin1String("-cleaner"));
 
     expressionQueue().clear();
 
     changeStatus(Status::Disable);
 }
 
 Cantor::Expression* SageSession::evaluateExpression(const QString& cmd, Cantor::Expression::FinishingBehavior behave, bool internal)
 {
     qDebug()<<"evaluating: "<<cmd;
     SageExpression* expr=new SageExpression(this, internal);
     expr->setFinishingBehavior(behave);
     expr->setCommand(cmd);
     expr->evaluate();
 
     return expr;
 }
 
 void SageSession::readStdOut()
 {
     m_outputCache.append(QString::fromUtf8(m_process->pty()->readAll()));
     qDebug()<<"out: "<<m_outputCache;
 
     if ( m_outputCache.contains( QLatin1String("___TMP_DIR___") ) )
     {
         int index=m_outputCache.indexOf(QLatin1String("___TMP_DIR___") )+14;
         int endIndex=m_outputCache.indexOf(QLatin1String("\n"), index);
 
         if(endIndex==-1)
             m_tmpPath=m_outputCache.mid( index ).trimmed();
         else
             m_tmpPath=m_outputCache.mid( index, endIndex-index ).trimmed();
 
         qDebug()<<"tmp path: "<<m_tmpPath;
 
         m_dirWatch.addDir( m_tmpPath, KDirWatch::WatchFiles );
     }
 
     if(!m_isInitialized)
     {
         if(updateSageVersion())
         {
             // After the update ipython5 somewhere around Sage 7.6, Cantor stopped working with Sage.
             // To fix this, we start Sage via a help wrapper that makes ipythong using simple prompt.
             // This method works starting with Sage 8.1"
             // Versions lower than 8.1 are not supported because of https://github.com/ipython/ipython/issues/9816
             if(m_sageVersion <= SageSession::VersionInfo(8, 0) && m_sageVersion >= SageSession::VersionInfo(7,4))
             {
                 const QString message = i18n(
                     "Sage version %1.%2 is unsupported. Please update your installation "\
                     "to the supported versions to make it work with Cantor.", m_sageVersion.majorVersion(), m_sageVersion.minorVersion());
                 KMessageBox::error(nullptr, message, i18n("Cantor"));
                 interrupt();
                 logout();
             }
             else if(m_sageVersion<=SageSession::VersionInfo(5, 7))
             {
                 qDebug()<<"using an old version of sage: "<<m_sageVersion.majorVersion()<<"."<<m_sageVersion.minorVersion()<<". Using the old init command";
                 if(!m_haveSentInitCmd)
                 {
                     m_process->pty()->write(legacyInitCmd);
                     defineCustomFunctions();
                     m_process->pty()->write(endOfInitMarker);
                     m_haveSentInitCmd=true;
                 }
 
             }
             else
             {
                 qDebug()<<"using the current set of commands";
 
                 if(!m_haveSentInitCmd)
                 {
                     m_process->pty()->write(newInitCmd);
                     defineCustomFunctions();
                     m_process->pty()->write(endOfInitMarker);
                     m_haveSentInitCmd=true;
                 }
             }
         }
         else
         {
             const QString message = i18n(
                 "Failed to determine the version of Sage. Please check your installation and the output of 'sage -v'.");
             KMessageBox::error(nullptr, message, i18n("Cantor"));
             interrupt();
             logout();
         }
     }
 
 
     int indexOfEOI=m_outputCache.indexOf(QLatin1String("____END_OF_INIT____"));
     if(indexOfEOI!=-1&&m_outputCache.indexOf(QLatin1String(SagePrompt), indexOfEOI)!=-1)
     {
         qDebug()<<"initialized";
         //out.remove("____END_OF_INIT____");
         //out.remove(SagePrompt);
         m_isInitialized=true;
         m_waitingForPrompt=false;
         runFirstExpression();
         changeStatus(Cantor::Session::Done);
         m_outputCache.clear();
     }
 
     //If we are waiting for another prompt, drop every output
     //until a prompt is found
     if(m_isInitialized&&m_waitingForPrompt)
     {
         qDebug()<<"waiting for prompt";
         if(m_outputCache.contains(QLatin1String(SagePrompt)))
             m_waitingForPrompt=false;
 
         m_outputCache.clear();
         return;
     }
 
     if(m_isInitialized)
     {
         if (!expressionQueue().isEmpty())
         {
             SageExpression* expr = static_cast<SageExpression*>(expressionQueue().first());
             expr->parseOutput(m_outputCache);
         }
         m_outputCache.clear();
     }
 }
 
 void SageSession::readStdErr()
 {
     qDebug()<<"reading stdErr";
     QString out=QLatin1String(m_process->readAllStandardError());
     qDebug()<<"err: "<<out;
     if (!expressionQueue().isEmpty())
     {
         SageExpression* expr = static_cast<SageExpression*>(expressionQueue().first());
         expr->parseError(out);
     }
 }
 
 void SageSession::currentExpressionChangedStatus(Cantor::Expression::Status status)
 {
     switch (status)
     {
         case Cantor::Expression::Done:
         case Cantor::Expression::Error:
             finishFirstExpression();
 
         default:
             break;
     }
 }
 
 void SageSession::processFinished(int exitCode, QProcess::ExitStatus exitStatus)
 {
     Q_UNUSED(exitCode);
     if(exitStatus==QProcess::CrashExit)
     {
         if(!expressionQueue().isEmpty())
         {
             static_cast<SageExpression*>(expressionQueue().last())
                 ->onProcessError(i18n("The Sage process crashed while evaluating this expression"));
         }else
         {
             //We don't have an actual command. it crashed for some other reason, just show a plain error message box
             KMessageBox::error(nullptr, i18n("The Sage process crashed"), i18n("Cantor"));
         }
     }else
     {
         if(!expressionQueue().isEmpty())
         {
             static_cast<SageExpression*>(expressionQueue().last())
                 ->onProcessError(i18n("The Sage process exited while evaluating this expression"));
         }else
         {
             //We don't have an actual command. it crashed for some other reason, just show a plain error message box
             KMessageBox::error(nullptr, i18n("The Sage process exited"), i18n("Cantor"));
         }
     }
 }
 
 void SageSession::reportProcessError(QProcess::ProcessError e)
 {
     if(e==QProcess::FailedToStart)
     {
         changeStatus(Cantor::Session::Done);
         emit error(i18n("Failed to start Sage"));
     }
 }
 
 void SageSession::runFirstExpression()
 {
     if(!expressionQueue().isEmpty())
     {
         SageExpression* expr = static_cast<SageExpression*>(expressionQueue().first());
         if (m_isInitialized)
         {
             connect(expr, SIGNAL(statusChanged(Cantor::Expression::Status)), this, SLOT(currentExpressionChangedStatus(Cantor::Expression::Status)));
 
             QString command=expr->command();
             if(command.endsWith(QLatin1Char('?')) && !command.endsWith(QLatin1String("??")))
                 command=QLatin1String("help(")+command.left(command.size()-1)+QLatin1Char(')');
             if(command.startsWith(QLatin1Char('?')))
                 command=QLatin1String("help(")+command.mid(1)+QLatin1Char(')');
             command.append(QLatin1String("\n\n"));
 
             qDebug()<<"writing "<<command<<" to the process";
             expr->setStatus(Cantor::Expression::Computing);
             m_process->pty()->write(command.toUtf8());
         }
         else if (expressionQueue().size() == 1)
             // If queue contains one expression, it means, what we run this expression immediately (drop setting queued status)
             // But we can't run expression before initializing, so mark expression, as queue
             expr->setStatus(Cantor::Expression::Queued);
     }
 }
 
 void SageSession::interrupt()
 {
     if(!expressionQueue().isEmpty())
     {
         qDebug()<<"interrupting " << expressionQueue().first()->command();
         if(m_process->state() != QProcess::NotRunning)
         {
 #ifndef Q_OS_WIN
             const int pid=m_process->pid();
             kill(pid, SIGINT);
 #else
             ; //TODO: interrupt the process on windows
 #endif
         }
         foreach (Cantor::Expression* expression, expressionQueue())
             expression->setStatus(Cantor::Expression::Interrupted);
         expressionQueue().clear();
 
         qDebug()<<"done interrupting";
     }
 
     changeStatus(Cantor::Session::Done);
     m_outputCache.clear();
 }
 
 void SageSession::sendInputToProcess(const QString& input)
 {
     m_process->pty()->write(input.toUtf8());
 }
 
 void SageSession::fileCreated( const QString& path )
 {
     qDebug()<<"got a file "<<path;
     if (!expressionQueue().isEmpty())
     {
         SageExpression* expr = static_cast<SageExpression*>(expressionQueue().first());
         if ( expr )
            expr->addFileResult( path );
     }
 }
 
 void SageSession::setTypesettingEnabled(bool enable)
 {
     Cantor::Session::setTypesettingEnabled(enable);
 
     // We have problems with Sage latex output (generates invalid code sometimes), so disable sage
     // latex output until this not be solved. Users can enable sage latex by hands using %display
     // sage magic.
 
     //tell the sage server to enable/disable pretty_print
     //const QString cmd=QLatin1String("__cantor_enable_typesetting(%1)");
     //evaluateExpression(cmd.arg(enable ? QLatin1String("true"):QLatin1String("false")), Cantor::Expression::DeleteOnFinish);
 }
 
 void SageSession::setWorksheetPath(const QString& path)
 {
     //save the path to the worksheet as variable "__file__"
     //this variable is usually set by the "os" package when running a script
     //but when it is run in an interpreter (like sage server) it is not set
     const QString cmd = QLatin1String("__file__ = '%1'");
     evaluateExpression(cmd.arg(path), Cantor::Expression::DeleteOnFinish, true);
 }
 
 Cantor::CompletionObject* SageSession::completionFor(const QString& command, int index)
 {
     return new SageCompletionObject(command, index, this);
 }
 
 QSyntaxHighlighter* SageSession::syntaxHighlighter(QObject* parent)
 {
     return new SageHighlighter(parent);
 }
 
 SageSession::VersionInfo SageSession::sageVersion()
 {
     return m_sageVersion;
 }
 
 void SageSession::defineCustomFunctions()
 {
     //typesetting
     QString cmd=QLatin1String("def __cantor_enable_typesetting(enable):\n");
     if(m_sageVersion<VersionInfo(5, 7))
     {
         //the _ and __IP.outputcache() are needed to keep the
         // _ operator working. in modern versions of sage the __IP variable
         //has been removed
         cmd+=QLatin1String("\t sage.misc.latex.pretty_print_default(enable);_;__IP.outputcache() \n\n");
     }else if (m_sageVersion > VersionInfo(5, 7) && m_sageVersion< VersionInfo(5, 12))
     {
         cmd+=QLatin1String("\t sage.misc.latex.pretty_print_default(enable)\n\n");
     }else
     {
         cmd+=QLatin1String("\t if(enable==true):\n "\
              "\t \t %display typeset \n"\
              "\t else: \n" \
              "\t \t %display simple \n\n");
     }
 
     sendInputToProcess(cmd);
 }
 
 bool SageSession::updateSageVersion()
 {
     QProcess get_sage_version;
     get_sage_version.setProgram(SageSettings::self()->path().toLocalFile());
     get_sage_version.setArguments(QStringList()<<QLatin1String("-v"));
     get_sage_version.start();
     get_sage_version.waitForFinished(-1);
     QString versionString = QString::fromLocal8Bit(get_sage_version.readLine());
     QRegularExpression versionExp(QLatin1String("(\\d+)\\.(\\d+)"));
     QRegularExpressionMatch version = versionExp.match(versionString);
     qDebug()<<"found version: " << version.capturedTexts();
     if(version.capturedTexts().length() == 3)
     {
         int major=version.capturedTexts().at(1).toInt();
         int minor=version.capturedTexts().at(2).toInt();
         m_sageVersion=SageSession::VersionInfo(major, minor);
         return true;
     }
     else
         return false;
 }
diff --git a/src/lib/test/backendtest.cpp b/src/lib/test/backendtest.cpp
index 1a020b84..021d68c5 100644
--- a/src/lib/test/backendtest.cpp
+++ b/src/lib/test/backendtest.cpp
@@ -1,112 +1,113 @@
 /*
     This program is free software; you can redistribute it and/or
     modify it under the terms of the GNU General Public License
     as published by the Free Software Foundation; either version 2
     of the License, or (at your option) any later version.
 
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software
     Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA  02110-1301, USA.
 
     ---
     Copyright (C) 2009 Alexander Rieder <alexanderrieder@gmail.com>
  */
 
 #include "backendtest.h"
 
 #include "backend.h"
 #include "session.h"
 
 #include <KLocalizedString>
 #include <QSignalSpy>
 
 void BackendTest::createSession()
 {
     Cantor::Backend* b=Cantor::Backend::getBackend( backendName() );
     if(!b || !b->requirementsFullfilled() )
     {
         m_session = nullptr;
         return;
     }
 
     m_session=b->createSession();
 
     QSignalSpy spy(m_session, SIGNAL(loginDone()) );
     m_session->login();
     if(spy.isEmpty())
         waitForSignal(m_session, SIGNAL(loginDone()) );
 
     QVERIFY(!spy.isEmpty());
 }
 
 Cantor::Expression* BackendTest::evalExp(const QString& exp )
 {
    Cantor::Expression* e=m_session->evaluateExpression(exp);
 
    if(e->status()==Cantor::Expression::Queued)
    {
        waitForSignal( e, SIGNAL(statusChanged(Cantor::Expression::Status)) );
    }
 
    if (e->status()==Cantor::Expression::Computing)
    {
        waitForSignal( e, SIGNAL(statusChanged(Cantor::Expression::Status)) );
    }
    return e;
 }
 
 QString BackendTest::cleanOutput(const QString& out)
 {
     QString cleaned=out;
     cleaned.replace( QLatin1String("&nbsp;"),QLatin1String(" ") );
     cleaned.remove( QLatin1String("<br/>") );
     cleaned.replace( QChar::ParagraphSeparator, QLatin1Char('\n') );
     cleaned.replace( QRegExp( QLatin1String("\\n\\n") ), QLatin1String("\n") );
     cleaned.replace( QRegExp( QLatin1String("\\n\\s*") ), QLatin1String("\n") );
 
     return cleaned.trimmed();
 }
 
 void BackendTest::initTestCase()
 {
+    QCoreApplication::setApplicationName(QLatin1String("cantor"));
     createSession();
     if (!m_session)
     {
         QString reason = i18n("This test requires a functioning %1 backend", backendName() );
         QSKIP( reason.toStdString().c_str(), SkipAll );
     }
 }
 
 void BackendTest::cleanupTestCase()
 {
     if (m_session)
     {
         m_session->logout();
     }
 }
 
 Cantor::Session* BackendTest::session()
 {
     return m_session;
 }
 
 void BackendTest::waitForSignal(QObject* sender, const char* signal)
 {
     QTimer timeout( this );
     timeout.setSingleShot( true );
 
     QEventLoop loop;
     connect( sender, signal, &loop, SLOT(quit()) );
     connect(&timeout, &QTimer::timeout, &loop, &QEventLoop::quit);
     timeout.start( 25000 );
     loop.exec();
 }