diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -86,6 +86,7 @@
     auto newInstanceWidget = new AtCoreInstanceWidget();
     QString name = QString::number(m_instances->addTab(newInstanceWidget, i18n("Connect a printer")));
     newInstanceWidget->setObjectName(name);
+    newInstanceWidget->setOpenFiles(m_openFiles);
     connect(this, &MainWindow::profilesChanged, newInstanceWidget, &AtCoreInstanceWidget::updateProfileData);
     connect(newInstanceWidget, &AtCoreInstanceWidget::requestProfileDialog, [ this ] {
         std::unique_ptr<ProfilesDialog> pd(new ProfilesDialog);
diff --git a/src/widgets/atcoreinstancewidget.h b/src/widgets/atcoreinstancewidget.h
--- a/src/widgets/atcoreinstancewidget.h
+++ b/src/widgets/atcoreinstancewidget.h
@@ -67,6 +67,7 @@
     QMap<QString, QVariant> profileData;
     QList<QUrl> m_files;
     QAction *m_printAction;
+    QAction *m_stopAction;
     QSettings m_settings;
     QString m_theme;
     void initConnectsToAtCore();
@@ -86,6 +87,7 @@
     void updateSerialPort(const QStringList &ports);
     void buildConnectionToolbar();
     void connectButtonClicked();
+    void togglePrintButtons(bool shown);
 signals:
     void connectionChanged(QString name);
     void disableDisconnect(bool b);
diff --git a/src/widgets/atcoreinstancewidget.cpp b/src/widgets/atcoreinstancewidget.cpp
--- a/src/widgets/atcoreinstancewidget.cpp
+++ b/src/widgets/atcoreinstancewidget.cpp
@@ -28,7 +28,8 @@
     QWidget(parent),
     m_mainToolBar(nullptr),
     m_toolBar(nullptr),
-    m_printAction(nullptr)
+    m_printAction(nullptr),
+    m_stopAction(nullptr)
 {
     m_theme = palette().text().color().value() >= QColor(Qt::lightGray).value() ? QString("dark") : QString("light") ;
     ui = new Ui::AtCoreInstanceWidget;
@@ -116,20 +117,20 @@
     });
     m_mainToolBar->addAction(m_printAction);
 
-    auto stopAction = new QAction(QIcon::fromTheme("media-playback-stop", QIcon(QString(":/%1/stop").arg(m_theme))), i18n("Stop"));
-
-    connect(stopAction, &QAction::triggered, this, &AtCoreInstanceWidget::stopPrint);
-    connect(stopAction, &QAction::triggered, [this](){
+    m_stopAction = new QAction(QIcon::fromTheme("media-playback-stop", QIcon(QString(":/%1/stop").arg(m_theme))), i18n("Stop"));
+    connect(m_stopAction, &QAction::triggered, this, &AtCoreInstanceWidget::stopPrint);
+    connect(m_stopAction, &QAction::triggered, [this](){
         m_printAction->setText(i18n("Print"));
         m_printAction->setIcon(QIcon::fromTheme("media-playback-start", QIcon(QString(":/%1/start").arg(m_theme))));
     });
-    m_mainToolBar->addAction(stopAction);
+    m_mainToolBar->addAction(m_stopAction);
 
     auto disableMotorsAction = new QAction(style()->standardIcon(QStyle::SP_MediaStop),i18n("Disable Motors"));
     connect(disableMotorsAction, &QAction::triggered, this, &AtCoreInstanceWidget::disableMotors);
     m_mainToolBar->addAction(disableMotorsAction);
 
     ui->mainToolBarLayout->addWidget(m_mainToolBar);
+    togglePrintButtons(m_files.size());
 }
 
 void AtCoreInstanceWidget::buildConnectionToolbar()
@@ -449,6 +450,7 @@
 void AtCoreInstanceWidget::setOpenFiles(const QList<QUrl>& files)
 {
     m_files = files;
+    togglePrintButtons(m_files.size());
 }
 
 void AtCoreInstanceWidget::updateSerialPort(const QStringList &ports)
@@ -465,3 +467,9 @@
     m_comboProfile->clear();
     m_comboProfile->addItems(profiles);
 }
+
+void AtCoreInstanceWidget::togglePrintButtons(bool shown)
+{
+    m_printAction->setVisible(shown);
+    m_stopAction->setVisible(shown);
+}