diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,18 +7,20 @@
 find_package(ECM ${KF5_MIN_VERSION} REQUIRED CONFIG)
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${ECM_MODULE_PATH} ${ECM_KDE_MODULE_DIR})
 
-find_package(Qt5 ${QT_MIN_VERSION} REQUIRED NO_MODULE COMPONENTS Widgets Qml Quick QuickWidgets Svg Test OpenGL)
+find_package(Qt5 ${QT_MIN_VERSION} REQUIRED NO_MODULE COMPONENTS Widgets Qml Quick QuickWidgets PrintSupport Svg Test OpenGL)
 find_package(KF5 ${KF5_MIN_VERSION} REQUIRED COMPONENTS
+    Archive
     Config
     ConfigWidgets
     CoreAddons
     Crash
     DBusAddons
+    DocTools
     GuiAddons
     I18n
     ItemModels
-    KDELibs4Support
     KIO
+    JobWidgets
     NewStuff
     NotifyConfig
     TextWidgets
diff --git a/src/gui/CMakeLists.txt b/src/gui/CMakeLists.txt
--- a/src/gui/CMakeLists.txt
+++ b/src/gui/CMakeLists.txt
@@ -36,11 +36,14 @@
 target_link_libraries(ksudoku_gui 
 	ksudoku_logic
     KF5KDEGames
-        KF5::Archive	 
-	KF5::KDELibs4Support 
+	KF5::Archive
+	KF5::GuiAddons
 	KF5::KIOCore
+	KF5::KIOWidgets
+	KF5::XmlGui
 	Qt5::Core 
 	Qt5::Gui
+	Qt5::PrintSupport
         Qt5::Svg
 	)
 
diff --git a/src/gui/gamevariants.cpp b/src/gui/gamevariants.cpp
--- a/src/gui/gamevariants.cpp
+++ b/src/gui/gamevariants.cpp
@@ -416,7 +416,8 @@
 	    m_graph = 0;	// Killer Sudoku game (re-inits cages and size).
 	}
 	if (m_graph == 0) {
-	    m_graph = ksudoku::Serializer::loadCustomShape(m_url, 0, 0);
+            QString errorMsg;
+	    m_graph = ksudoku::Serializer::loadCustomShape(m_url, 0, errorMsg);
 	}
 	return (m_graph != 0);	// True if the shapes/*.xml file loaded OK.
 }
diff --git a/src/gui/ksudoku.h b/src/gui/ksudoku.h
--- a/src/gui/ksudoku.h
+++ b/src/gui/ksudoku.h
@@ -91,7 +91,6 @@
 	
 public:
 	void updateShapesList();
-	void loadCustomShapeFromPath();
 	void createCustomShape();
 
 	ksudoku::Game    currentGame() const;
diff --git a/src/gui/ksudoku.cpp b/src/gui/ksudoku.cpp
--- a/src/gui/ksudoku.cpp
+++ b/src/gui/ksudoku.cpp
@@ -2,8 +2,7 @@
  *   Copyright 2005-2007 Francesco Rossi <redsh@email.it>                  *
  *   Copyright 2006-2007 Mick Kappenburg <ksudoku@kappendburg.net>         *
  *   Copyright 2006-2008 Johannes Bergmeier <johannes.bergmeier@gmx.net>   *
- *   Copyright 2012      Ian Wadham <iandw.au@gmail.com>                   *
- *   Copyright 2015      Ian Wadham <iandw.au@gmail.com>                   *
+ *   Copyright 2012,2015 Ian Wadham <iandw.au@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  *
@@ -25,35 +24,39 @@
 #include "globals.h"
 #include "ksudoku.h"
 
+#include <QAction>
+#include <QComboBox>
+#include <QDir>
 #include <QDebug>
 #include <QDragEnterEvent>
 #include <QDropEvent>
-
-#include <QHBoxLayout>
-#include <QLabel>
-#include <QComboBox>
-
+#include <QFileDialog>
+#include <QFileInfo>
 #include <QMimeData>
-
+#include <QLabel>
+#include <QHBoxLayout>
+#include <QKeySequence>
 #include <QPrinter>
 #include <QPrintDialog>
 #include <QStandardPaths>
+#include <QStatusBar>
+#include <QTemporaryFile>
+#include <QUrl>
 
-#include <KLocalizedString>
 #include <KActionCollection>
-#include <KStandardAction>
-#include <QAction>
 #include <KConfigDialog>
+#include <KIO/Job>
+#include <KJobWidgets>
+#include <KLocalizedString>
+#include <KMessageBox>
+#include <KRun>
+#include <KSharedConfig>
+#include <KStandardAction>
+#include <KStandardGameAction>
+#include <KTar>
 
 #define USE_UNSTABLE_LIBKDEGAMESPRIVATE_API
 #include <libkdegamesprivate/kgamethemeselector.h>
-#include <QKeySequence>
-#include <QUrl>
-#include <kmessagebox.h>
-#include <KLocalizedString>
-#include <qstatusbar.h>
-#include <kio/netaccess.h>
-#include <krun.h>
 
 #include "ksview.h"
 #include "gameactions.h"
@@ -65,14 +68,6 @@
 
 #include "puzzleprinter.h"
 
-#include <ktar.h>
-#include <kio/job.h>
-#include <kstandardgameaction.h>
-#include <QDir>
-#include <KSharedConfig>
-#include <QFileDialog>
-#include <QFileInfo>
-
 #include "gamevariants.h"
 #include "welcomescreen.h"
 #include "valuelistwidget.h"
@@ -373,7 +368,7 @@
 
 void KSudoku::loadGame(const QUrl& Url) {
 	QString errorMsg;
-	Game game = ksudoku::Serializer::load(Url, this, &errorMsg);
+	const Game game = ksudoku::Serializer::load(Url, this, errorMsg);
 	if(!game.isValid()) {
 		KMessageBox::information(this, errorMsg);
 		return;
@@ -648,9 +643,12 @@
             // okay, we have a URI.. process it
             const QUrl &Url = Urls.first();
 
-            Game game = ksudoku::Serializer::load(Url, this);
+            QString errorMsg;
+            const Game game = ksudoku::Serializer::load(Url, this, errorMsg);
             if(game.isValid())
                 startGame(game);
+            else
+                KMessageBox::error(this, i18n("Could not load game: %1.", errorMsg));
         }
     }
 }
@@ -686,9 +684,10 @@
 
 	if (!Url.isEmpty() && Url.isValid())
 	{
-		Game game = ksudoku::Serializer::load(Url, this);
+		QString errorMsg;
+		Game game = ksudoku::Serializer::load(Url, this, errorMsg);
 		if(!game.isValid()) {
-			KMessageBox::error(this, i18n("Could not load game."));
+			KMessageBox::error(this, i18n("Could not load game: %1.", errorMsg));
 			return;
 		}
 
@@ -862,43 +861,6 @@
 	return m_gameUI;
 }
 
-void KSudoku::loadCustomShapeFromPath()
-{
-	QUrl Url = QFileDialog::getOpenFileUrl(this, i18n("Open Location"), QUrl(), QString());
-
-	if ( Url.isEmpty() || !Url.isValid() )
-	{
-		return; // user cancelled
-	}
-
-	QString tmpFile;
-	if(!KIO::NetAccess::download( Url, tmpFile, this ))
-	{
-		//TODO ERROR
-		return;
-	}
-
-	const QString destDir = QStandardPaths::writableLocation( QStandardPaths::GenericDataLocation ) + QStringLiteral("/ksudoku/");
-	QDir().mkpath( destDir );
-
-	KTar archive( tmpFile );
-
-	if ( archive.open( QIODevice::ReadOnly ) )
-	{
-		const KArchiveDirectory *archiveDir = archive.directory();
-		archiveDir->copyTo( destDir );
-		archive.close();
-	}
-	else
-	{
-		//just copy
-		KIO::file_copy (Url, QUrl::fromLocalFile(destDir + '/' + Url.fileName()));
-	}
-
-	KIO::NetAccess::removeTempFile(tmpFile);
-	updateShapesList();
-}
-
 void KSudoku::enableMessages()
 {
 	// Enable all messages that the user has marked "Do not show again".
diff --git a/src/gui/serializer.h b/src/gui/serializer.h
--- a/src/gui/serializer.h
+++ b/src/gui/serializer.h
@@ -39,11 +39,11 @@
 class Serializer {
 public:
 	static SKGraph* loadCustomShape
-		    (const QUrl& url, QWidget* window, QString* errorMsg = 0);
+		    (const QUrl& url, QWidget* window, QString& errorMsg);
 	static bool store
 		    (const Game& game, const QUrl& url, QWidget* window);
 	static Game load
-		    (const QUrl& url, QWidget* window, QString* errorMsg = 0);
+		    (const QUrl& url, QWidget* window, QString& errorMsg);
 
 private:
 	// TODO - IDW. Maybe there should be shared methods for file handling.
diff --git a/src/gui/serializer.cpp b/src/gui/serializer.cpp
--- a/src/gui/serializer.cpp
+++ b/src/gui/serializer.cpp
@@ -24,16 +24,17 @@
 #include "ksudokugame.h"
 #include "puzzle.h"
 
-#include <qdom.h>
-//Added by qt3to4:
+#include <QDomDocument>
+#include <QFile>
 #include <QList>
 #include <QTextStream>
 #include <QUrl>
 #include <QTemporaryFile>
-#include <kio/netaccess.h>
-#include <qfile.h>
-#include <KLocalizedString>
 
+#include <KIO/FileCopyJob>
+#include <KJobWidgets>
+#include <KLocalizedString>
+#include <KMessageBox>
 
 #include "ksudoku.h"
 #include "symbols.h"
@@ -398,29 +399,32 @@
 	return HistoryEvent();
 }
 
-SKGraph *Serializer::loadCustomShape(const QUrl &url, QWidget* window, QString *errorMsg) {
-	if ( url.isEmpty() ) return 0;
-	QString tmpFile;
-	bool success = false;
+SKGraph *Serializer::loadCustomShape(const QUrl& url, QWidget* window, QString& errorMsg) {
+	if ( url.isEmpty() ) {
+		errorMsg = i18n("Unable to download file: URL is empty.");
+		return nullptr;
+	}
 	QDomDocument doc;
-	if(KIO::NetAccess::download(url, tmpFile, window) ) {
-		QFile file(tmpFile);
-		if(file.open(QIODevice::ReadOnly)) {
-			int errorLine;
-			if(!doc.setContent(&file, 0, &errorLine)) {
-				if(errorMsg)
-					*errorMsg = i18n("Cannot read XML file on line %1", errorLine);
-
-				return 0;
-			}
-			success = true;
-		}
-		KIO::NetAccess::removeTempFile(tmpFile);
+
+	QTemporaryFile tmpFile;
+	if ( !tmpFile.open() ) {
+		errorMsg = i18n("Unable to create temporary file.");
+		return nullptr;
 	}
-	if ( !success ) {
-		if(errorMsg)
-			*errorMsg = i18n("Cannot load file.");
-		return 0;
+	KIO::FileCopyJob *downloadJob = KIO::file_copy(url, QUrl::fromLocalFile(tmpFile.fileName()), -1, KIO::Overwrite);
+	KJobWidgets::setWindow(downloadJob, window);
+	downloadJob->exec();
+
+	if( downloadJob->error() ) {
+		errorMsg = i18n("Unable to download file.");
+		return nullptr;
+	}
+
+	int errorLine;
+	if(!doc.setContent(&tmpFile, 0, &errorLine)) {
+		errorMsg = i18n("Cannot read XML file on line %1", errorLine);
+
+		return nullptr;
 	}
 
 	QDomNode child = doc.documentElement().firstChild();
@@ -433,30 +437,30 @@
 		child = child.nextSibling();
 	}
 
-	return 0;
+	return nullptr;
 }
 
-Game Serializer::load(const QUrl& url, QWidget* window, QString *errorMsg) {
+Game Serializer::load(const QUrl& url, QWidget* window, QString& errorMsg) {
 	if ( url.isEmpty() ) return Game();
-	QString tmpFile;
-	bool success = false;
 	QDomDocument doc;
-	if(KIO::NetAccess::download(url, tmpFile, window) ) {
-		QFile file(tmpFile);
-		if(file.open(QIODevice::ReadOnly)) {
-			int errorLine;
-			if(!doc.setContent(&file, 0, &errorLine)) {
-				if(errorMsg)
-					*errorMsg = i18n("Cannot read XML file on line %1", errorLine);
-				return Game();
-			}
-			success = true;
-		}
-		KIO::NetAccess::removeTempFile(tmpFile);
+
+	QTemporaryFile tmpFile;
+	if ( !tmpFile.open() ) {
+		errorMsg = i18n("Unable to create temporary file.");
+		return Game();
 	}
-	if ( !success ) {
-		if(errorMsg)
-			*errorMsg = i18n("Cannot load file.");
+	KIO::FileCopyJob *downloadJob = KIO::file_copy(url, QUrl::fromLocalFile(tmpFile.fileName()), -1, KIO::Overwrite);
+	KJobWidgets::setWindow(downloadJob, window);
+	downloadJob->exec();
+
+	if( downloadJob->error() ) {
+		errorMsg = i18n("Unable to download file.");
+		return Game();
+	}
+
+	int errorLine;
+	if(!doc.setContent(&tmpFile, 0, &errorLine)) {
+		errorMsg = i18n("Cannot read XML file on line %1", errorLine);
 		return Game();
 	}
 
@@ -690,13 +694,23 @@
 	serializeGame(root, game);
 
 	QTemporaryFile file;
-	file.open();
+	if ( !file.open() ) {
+		KMessageBox::error(window, i18n("Unable to create temporary file."), i18n("Error Opening File"));
+		return false;
+	}
 
 	QTextStream stream(&file);
 	stream << doc.toString();
 	stream.flush();
 
-	KIO::NetAccess::upload(file.fileName(), url, window);
+	KIO::FileCopyJob *copyJob = KIO::file_copy(QUrl::fromLocalFile(file.fileName()), url);
+	KJobWidgets::setWindow(copyJob , window);
+	copyJob->exec();
+	if(copyJob->error())
+	{
+		KMessageBox::error(window, i18n("Unable to upload file."), i18n("Error Writing File"));
+		return false;
+	}
 	return true;
 }
 
diff --git a/src/gui/symbols.cpp b/src/gui/symbols.cpp
--- a/src/gui/symbols.cpp
+++ b/src/gui/symbols.cpp
@@ -26,7 +26,7 @@
 
 namespace ksudoku {
 
-/// returns the symbol vor a value used for loading and saving
+/// returns the symbol for a value used for loading and saving
 QChar Symbols::ioValue2Symbol(int value) {
 	if (value == VACANT) return '_';
 	if (value == UNUSABLE) return '.';
@@ -35,7 +35,7 @@
 
 /// returns the number of the index
 int Symbols::ioSymbol2Value(const QChar& symbol) {
-	char c = symbol.toAscii();
+	char c = symbol.toLatin1();
 	if(symbol == '_') return VACANT;
 	if(symbol == '.') return UNUSABLE;
 	return c - 'a';
diff --git a/src/gui/views/view2d.cpp b/src/gui/views/view2d.cpp
--- a/src/gui/views/view2d.cpp
+++ b/src/gui/views/view2d.cpp
@@ -71,7 +71,7 @@
 };
 
 CellGraphicsItem::CellGraphicsItem(QPoint pos, int id, View2DScene* scene) {
-	setAcceptsHoverEvents(true);
+	setAcceptHoverEvents(true);
 	setShapeMode(QGraphicsPixmapItem::BoundingRectShape);
 	m_pos = pos;
 	m_size = 0;