diff --git a/CHANGELOG b/CHANGELOG
index ebff93645..278598ce1 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,9 +1,14 @@
-Version 0.12.7
+Version 0.12.8
 ========================
-- added dialog to create license file (pops up when a license is in the user's clipboard and the "About GAMS" is opened)
-- disabled top dockwidget area for all widgets as it should be used solely by the extended parameter editor
-- fixed behavior of jumping to matching parenthesis ([Shift+]F8)
-- fixed missing parenthesis highlighting for variables
-- reduced flickering when minimizing/maximizing Studio
-- removed online version check on Studio startup
+
+# General
+- fixed Studio not popping up for warning when drag'n'droping many files
+- disabled GoTo dialog for all non-applicable widgets
+- fixed crash when opening files with certain parenthesis constructs
+- added fullscreen mode (win/linux: ALT+Return, macos: META+CMD+F)
+- fixed accidental closing of log tab when closing results page
+
+# Reference Viewer
+- added auto resize when opening
+- added context menu to let users auto resize after doing manual changes
 
diff --git a/platform/macos/macoscocoabridge.h b/platform/macos/macoscocoabridge.h
index d2fe88166..4e9b9c8ca 100644
--- a/platform/macos/macoscocoabridge.h
+++ b/platform/macos/macoscocoabridge.h
@@ -29,6 +29,7 @@ class MacOSCocoaBridge
     static void disableDictationMenuItem(bool flag);
     static void disableCharacterPaletteMenuItem(bool flag);
     static void setAllowsAutomaticWindowTabbing(bool flag);
+    static void setFullScreenMenuItemEverywhere(bool flag);
 };
 
 #endif // MACOSCOCOABRIDGE_H
diff --git a/platform/macos/macoscocoabridge.mm b/platform/macos/macoscocoabridge.mm
index de357e569..185d4fa90 100644
--- a/platform/macos/macoscocoabridge.mm
+++ b/platform/macos/macoscocoabridge.mm
@@ -35,3 +35,8 @@
 {
     [NSWindow setAllowsAutomaticWindowTabbing: flag];
 }
+
+void MacOSCocoaBridge::setFullScreenMenuItemEverywhere(bool flag)
+{
+    [[NSUserDefaults standardUserDefaults] setBool:flag forKey:@"NSFullScreenMenuItemEverywhere"];
+}
diff --git a/src/main.cpp b/src/main.cpp
index 71e4cb72a..0a472546b 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -28,6 +28,7 @@ using gams::studio::Application;
 int main(int argc, char *argv[])
 {
     QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
+    QApplication::setAttribute(Qt::AA_UseOpenGLES);
     QApplication::setApplicationVersion(STUDIO_VERSION);
     QCoreApplication::setAttribute(Qt::AA_UseOpenGLES);
 
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index 17a729d65..e18b1b15f 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -74,7 +74,6 @@ MainWindow::MainWindow(QWidget *parent)
 {
     mTextMarkRepo.init(&mFileMetaRepo, &mProjectRepo);
     mSettings = SettingsLocator::settings();
-    mHistory = new HistoryData();
 //    QFile css(":/data/style.css");
 //    if (css.open(QFile::ReadOnly | QFile::Text)) {
 //        this->setStyleSheet(css.readAll());
@@ -98,6 +97,10 @@ MainWindow::MainWindow(QWidget *parent)
     MacOSCocoaBridge::disableDictationMenuItem(true);
     MacOSCocoaBridge::disableCharacterPaletteMenuItem(true);
     MacOSCocoaBridge::setAllowsAutomaticWindowTabbing(false);
+    MacOSCocoaBridge::setFullScreenMenuItemEverywhere(false);
+    ui->actionFull_Screen->setShortcut(QKeySequence::FullScreen);
+#else
+    ui->actionFull_Screen->setShortcuts({QKeySequence("Alt+Enter"), QKeySequence("Alt+Return")});
 #endif
 
     if (QOperatingSystemVersion::currentType() == QOperatingSystemVersion::MacOS) {
@@ -219,7 +222,6 @@ MainWindow::MainWindow(QWidget *parent)
     SearchLocator::provide(mSearchDialog);
     SettingsLocator::provide(mSettings);
     SysLogLocator::provide(mSyslog);
-
     QTimer::singleShot(0, this, &MainWindow::openInitialFiles);
 }
 
@@ -1644,7 +1646,10 @@ int MainWindow::showSaveChangesMsgBox(const QString &text)
 void MainWindow::on_logTabs_tabCloseRequested(int index)
 {
     bool isResults = ui->logTabs->widget(index) == mSearchDialog->resultsView();
-    if (isResults) mSearchDialog->clearResults();
+    if (isResults) {
+        mSearchDialog->clearResults();
+        return;
+    }
 
     QWidget* edit = ui->logTabs->widget(index);
     if (edit) {
@@ -1711,7 +1716,7 @@ void MainWindow::triggerGamsLibFileCreation(LibraryItem *item)
 
 HistoryData *MainWindow::history()
 {
-    return mHistory;
+    return &mHistory;
 }
 
 void MainWindow::addToOpenedFiles(QString filePath)
@@ -1932,6 +1937,8 @@ void MainWindow::dropEvent(QDropEvent* e)
 
         int answer;
         if(pathList.size() > 25) {
+            raise();
+            activateWindow();
             QMessageBox msgBox;
             msgBox.setText("You are trying to open " + QString::number(pathList.size()) +
                            " files at once. Depending on the file sizes this may take a long time.");
@@ -2016,7 +2023,7 @@ void MainWindow::mouseMoveEvent(QMouseEvent* event)
 {
     if (event->buttons()) {
         QWidget* child = childAt(event->pos());
-        Q_UNUSED(child);
+        Q_UNUSED(child)
     }
     QMainWindow::mouseMoveEvent(event);
 }
@@ -2832,10 +2839,11 @@ void MainWindow::writeTabs(QJsonObject &json) const
 
 void MainWindow::on_actionGo_To_triggered()
 {
-    if ((ui->mainTab->currentWidget() == mWp))
-        return;
+    if ((ui->mainTab->currentWidget() == mWp)) return;
     CodeEdit *codeEdit = ViewHelper::toCodeEdit(mRecent.editor());
     TextView *tv = ViewHelper::toTextView(mRecent.editor());
+    if (!codeEdit && !tv) return;
+
     int maxLines = codeEdit ? codeEdit->blockCount() : tv ? tv->knownLines() : 1000000;
     GoToDialog dialog(this, maxLines, bool(tv));
     int result = dialog.exec();
@@ -3377,6 +3385,19 @@ void MainWindow::setSearchWidgetPos(const QPoint& searchWidgetPos)
     mSearchWidgetPos = searchWidgetPos;
 }
 
+void MainWindow::on_actionFull_Screen_triggered()
+{
+    if (isFullScreen()) {
+        if (mMaximizedBeforeFullScreen)
+            showMaximized();
+        else
+            showNormal();
+    } else {
+        mMaximizedBeforeFullScreen = isMaximized();
+        showFullScreen();
+    }
+}
+
 }
 }
 
diff --git a/src/mainwindow.h b/src/mainwindow.h
index 6204d174f..8bcf3b50d 100644
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -239,6 +239,7 @@ private slots:
     void on_actionHelp_View_triggered(bool checked);
     void on_actionShow_System_Log_triggered();
     void on_actionShow_Welcome_Page_triggered();
+    void on_actionFull_Screen_triggered();
     // Other
     void on_mainTab_tabCloseRequested(int index);
     void on_logTabs_tabCloseRequested(int index);
@@ -351,7 +352,7 @@ private slots:
     QActionGroup *mCodecGroupSwitch;
     QActionGroup *mCodecGroupReload;
     RecentData mRecent;
-    HistoryData *mHistory;
+    HistoryData mHistory;
     StudioSettings* mSettings;
     std::unique_ptr<AutosaveHandler> mAutosaveHandler;
     ProjectContextMenu mProjectContextMenu;
@@ -369,6 +370,7 @@ private slots:
     int mTimerID;
     QStringList mOpenTabsList;
     QVector<int> mClosedTabsIndexes;
+    bool mMaximizedBeforeFullScreen;
 };
 
 }
diff --git a/src/mainwindow.ui b/src/mainwindow.ui
index 17adf5c1f..a0a50d71f 100644
--- a/src/mainwindow.ui
+++ b/src/mainwindow.ui
@@ -101,7 +101,7 @@
      <x>0</x>
      <y>0</y>
      <width>1024</width>
-     <height>22</height>
+     <height>23</height>
     </rect>
    </property>
    <widget class="QMenu" name="menuFile">
@@ -208,6 +208,8 @@
     <addaction name="separator"/>
     <addaction name="menuBookmarks"/>
     <addaction name="actionReset_Views"/>
+    <addaction name="separator"/>
+    <addaction name="actionFull_Screen"/>
    </widget>
    <widget class="QMenu" name="menuHelp">
     <property name="title">
@@ -1127,6 +1129,17 @@
     <string>Delete leftover scratch directories in current working directory</string>
    </property>
   </action>
+  <action name="actionFull_Screen">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="text">
+    <string>Full Screen</string>
+   </property>
+   <property name="shortcutContext">
+    <enum>Qt::WindowShortcut</enum>
+   </property>
+  </action>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
  <customwidgets>
diff --git a/src/reference/symbolreferencewidget.cpp b/src/reference/symbolreferencewidget.cpp
index f9ac6dd71..b7c1a8745 100644
--- a/src/reference/symbolreferencewidget.cpp
+++ b/src/reference/symbolreferencewidget.cpp
@@ -33,6 +33,7 @@ SymbolReferenceWidget::SymbolReferenceWidget(Reference* ref, SymbolDataType::Sym
     mReferenceViewer(parent)
 {
     ui->setupUi(this);
+    ui->symbolReferenceSplitter->setSizes(QList<int>({2500,1500}));
 
     mSymbolTableModel = new SymbolTableModel(mType, this);
     ui->symbolView->setModel( mSymbolTableModel );
@@ -45,15 +46,23 @@ SymbolReferenceWidget::SymbolReferenceWidget(Reference* ref, SymbolDataType::Sym
         ui->symbolView->sortByColumn(1, Qt::AscendingOrder);
     ui->symbolView->setSortingEnabled(true);
     ui->symbolView->setAlternatingRowColors(true);
+    ui->symbolView->setContextMenuPolicy(Qt::CustomContextMenu);
 
     ui->symbolView->horizontalHeader()->setStretchLastSection(true);
-    ui->symbolView->verticalHeader()->setSectionResizeMode(QHeaderView::Fixed);
+    ui->symbolView->horizontalHeader()->setSectionResizeMode(QHeaderView::Interactive);
+    ui->symbolView->horizontalHeader()->setSectionResizeMode( mSymbolTableModel->getLastSectionIndex(), QHeaderView::Stretch );
     ui->symbolView->verticalHeader()->setMinimumSectionSize(1);
     ui->symbolView->verticalHeader()->setDefaultSectionSize(int(fontMetrics().height()*TABLE_ROW_HEIGHT));
 
+    QAction* resizeColumn = mContextMenu.addAction("Auto Resize Columns", [this]() { resizeColumnToContents(); }, QKeySequence("Ctrl+R"));
+    resizeColumn->setShortcutContext(Qt::WidgetWithChildrenShortcut);
+    resizeColumn->setShortcutVisibleInContextMenu(true);
+    ui->symbolView->addAction(resizeColumn);
+
     connect(mSymbolTableModel, &SymbolTableModel::symbolSelectionToBeUpdated, this, &SymbolReferenceWidget::updateSymbolSelection);
     connect(ui->symbolView, &QAbstractItemView::doubleClicked, this, &SymbolReferenceWidget::jumpToFile);
     connect(ui->symbolView->selectionModel(), &QItemSelectionModel::selectionChanged, this, &SymbolReferenceWidget::updateSelectedSymbol);
+    connect(ui->symbolView, &QTableView::customContextMenuRequested, this, &SymbolReferenceWidget::showContextMenu);
     connect(ui->symbolSearchLineEdit, &QLineEdit::textChanged, mSymbolTableModel, &SymbolTableModel::setFilterPattern);
     connect(ui->allColumnToggleSearch, &QCheckBox::toggled, mSymbolTableModel, &SymbolTableModel::toggleSearchColumns);
 
@@ -63,11 +72,9 @@ SymbolReferenceWidget::SymbolReferenceWidget(Reference* ref, SymbolDataType::Sym
     ui->referenceView->setSelectionBehavior(QAbstractItemView::SelectRows);
     ui->referenceView->setSelectionMode(QAbstractItemView::SingleSelection);
     ui->referenceView->setItemsExpandable(true);
-    ui->referenceView->expandAll();
-    ui->referenceView->resizeColumnToContents(0);
-    ui->referenceView->resizeColumnToContents(1);
     ui->referenceView->setAlternatingRowColors(true);
     ui->referenceView->setColumnHidden(3, true);
+    expandResetModel();
 
     connect(ui->referenceView, &QAbstractItemView::doubleClicked, this, &SymbolReferenceWidget::jumpToReferenceItem);
     connect( mReferenceTreeModel, &ReferenceTreeModel::modelReset, this, &SymbolReferenceWidget::expandResetModel);
@@ -92,7 +99,7 @@ bool SymbolReferenceWidget::isModelLoaded() const
 
 void SymbolReferenceWidget::updateSelectedSymbol(QItemSelection selected, QItemSelection deselected)
 {
-    Q_UNUSED(deselected);
+    Q_UNUSED(deselected)
     if (selected.indexes().size() > 0) {
         if (mType == SymbolDataType::FileUsed) {
             mCurrentSymbolID = -1;
@@ -142,8 +149,10 @@ void SymbolReferenceWidget::resetModel()
 
 void SymbolReferenceWidget::initModel()
 {
-    if (!mSymbolTableModel->isModelLoaded())
+    if (!mSymbolTableModel->isModelLoaded()) {
         mSymbolTableModel->initModel(mReference);
+        resizeColumnToContents();
+    }
 
     mReferenceTreeModel->resetModel();
 }
@@ -183,6 +192,28 @@ void SymbolReferenceWidget::updateSymbolSelection()
     }
 }
 
+void SymbolReferenceWidget::resizeColumnToContents()
+{
+    ui->symbolView->resizeColumnsToContents();
+    ui->symbolView->horizontalHeader()->setSectionResizeMode( mSymbolTableModel->getLastSectionIndex(), QHeaderView::Stretch );
+}
+
+void SymbolReferenceWidget::showContextMenu(QPoint p)
+{
+    QModelIndexList indexSelection = ui->symbolView->selectionModel()->selectedIndexes();
+    if (indexSelection.size()<=0)
+        return;
+
+    if (mSymbolTableModel->rowCount()>0 && ui->symbolView->horizontalHeader()->logicalIndexAt(p)>=0) {
+        QMenu m(this);
+        for(QAction* action : ui->symbolView->actions()) {
+            action->setEnabled(true);
+            m.addAction(action);
+        }
+        m.exec(ui->symbolView->viewport()->mapToGlobal(p));
+    }
+}
+
 } // namespace reference
 } // namespace studio
 } // namespace gams
diff --git a/src/reference/symbolreferencewidget.h b/src/reference/symbolreferencewidget.h
index 37bebde6b..05bffbc10 100644
--- a/src/reference/symbolreferencewidget.h
+++ b/src/reference/symbolreferencewidget.h
@@ -21,6 +21,7 @@
 #define SYMBOLREFERENCEWIDGET_H
 
 #include <QWidget>
+#include <QMenu>
 #include <QSortFilterProxyModel>
 #include <QItemSelection>
 
@@ -59,9 +60,12 @@ public slots:
     void jumpToFile(const QModelIndex &index);
     void jumpToReferenceItem(const QModelIndex &index);
     void updateSymbolSelection();
+    void resizeColumnToContents();
+    void showContextMenu(QPoint p);
 
 private:
     Ui::SymbolReferenceWidget *ui;
+    QMenu mContextMenu;
 
     SymbolTableModel* mSymbolTableModel;
     ReferenceTreeModel* mReferenceTreeModel;
diff --git a/src/reference/symbolreferencewidget.ui b/src/reference/symbolreferencewidget.ui
index e41c667cd..70954705d 100644
--- a/src/reference/symbolreferencewidget.ui
+++ b/src/reference/symbolreferencewidget.ui
@@ -20,6 +20,21 @@
    <string>Form</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
+   <property name="spacing">
+    <number>6</number>
+   </property>
+   <property name="leftMargin">
+    <number>0</number>
+   </property>
+   <property name="topMargin">
+    <number>0</number>
+   </property>
+   <property name="rightMargin">
+    <number>0</number>
+   </property>
+   <property name="bottomMargin">
+    <number>0</number>
+   </property>
    <item>
     <widget class="QSplitter" name="symbolReferenceSplitter">
      <property name="sizePolicy">
diff --git a/src/reference/symboltablemodel.cpp b/src/reference/symboltablemodel.cpp
index 10a083e71..4c448c83e 100644
--- a/src/reference/symboltablemodel.cpp
+++ b/src/reference/symboltablemodel.cpp
@@ -175,7 +175,7 @@ QVariant SymbolTableModel::data(const QModelIndex &index, int role) const
          case SymbolDataType::Model :
              switch(index.column()) {
              case 0: return QString::number( refList.at(idx)->id() );
-             case 1: return refList.at(idx)->name();;
+             case 1: return refList.at(idx)->name();
              case 2: return SymbolDataType::from( refList.at(idx)->type() ).name();
              case 3: return refList.at(idx)->explanatoryText();
              default: break;
@@ -375,6 +375,28 @@ void SymbolTableModel::setFilterPattern(const QString &pattern)
     emit symbolSelectionToBeUpdated();
 }
 
+int SymbolTableModel::getLastSectionIndex()
+{
+    switch(mType) {
+    case SymbolDataType::Set :
+    case SymbolDataType::Acronym :
+    case SymbolDataType::Parameter :
+    case SymbolDataType::Variable :
+    case SymbolDataType::Equation :
+        return 4;
+    case SymbolDataType::Model :
+    case SymbolDataType::Funct :
+    case SymbolDataType::File :
+        return 2;
+    case SymbolDataType::FileUsed :
+        return 0;
+    case SymbolDataType::Unknown :
+    case SymbolDataType::Unused :
+        return 5;
+    }
+    return 0;
+}
+
 SymbolTableModel::SortType SymbolTableModel::getSortTypeOf(int column) const
 {
     switch(mType) {
diff --git a/src/reference/symboltablemodel.h b/src/reference/symboltablemodel.h
index 1826746be..25b1b29ce 100644
--- a/src/reference/symboltablemodel.h
+++ b/src/reference/symboltablemodel.h
@@ -51,6 +51,7 @@ class SymbolTableModel : public QAbstractTableModel
     int getSortedIndexOf(const QString &name) const;
     void toggleSearchColumns(bool checked);
     void setFilterPattern(const QString& pattern);
+    int getLastSectionIndex();
 
     static const int COLUMN_SYMBOL_ID = 0;
     static const int COLUMN_SYMBOL_NAME = 1;
diff --git a/src/studio.pro b/src/studio.pro
index e3e17b2e5..79f24d174 100644
--- a/src/studio.pro
+++ b/src/studio.pro
@@ -363,4 +363,5 @@ OTHER_FILES +=                                      \
     ../jenkinsfile                                  \
     ../jenkinsfile-ci                               \
     ../gamsstudio.desktop                           \
+    ../CHANGELOG                                    \
     ../version
diff --git a/src/support/aboutgamsdialog.cpp b/src/support/aboutgamsdialog.cpp
index f32876ff5..43eab2287 100644
--- a/src/support/aboutgamsdialog.cpp
+++ b/src/support/aboutgamsdialog.cpp
@@ -23,8 +23,12 @@
 #include "checkforupdatewrapper.h"
 #include "solvertablemodel.h"
 #include "commonpaths.h"
+#include "locators/abstractsystemlogger.h"
+#include "locators/sysloglocator.h"
+#include "gamslicenseinfo.h"
 
 #include <QClipboard>
+#include <QDir>
 #include <QFile>
 #include <QMessageBox>
 #include <QSortFilterProxyModel>
@@ -103,63 +107,47 @@ void AboutGAMSDialog::createLicenseFile(QWidget *parent)
 {
     auto clipboard = QGuiApplication::clipboard();
     auto licenseLines = clipboard->text().split('\n', QString::SkipEmptyParts);
-    if (!isValidLicense(licenseLines))
+    for (int i=0; i<licenseLines.size(); ++i)
+        licenseLines[i] = licenseLines[i].trimmed();
+
+    GamsLicenseInfo licenseInfo;
+    if (!licenseInfo.isLicenseValid(licenseLines))
         return;
 
     QFile licenseFile(CommonPaths::systemDir() + "/gamslice.txt");
     if (licenseFile.exists()) {
         auto result = QMessageBox::question(parent,
                                             "Overwrite current GAMS license file?",
-                                            "It looks like there is a GAMS license on the clipboard. "
-                                            "Do you want to overwrite your current license file from this text? "
-                                            "Your current license location is: " + licenseFile.fileName());
+                                            "It looks like there is a GAMS license in the clipboard. "
+                                            "Do you want to overwrite your current license file from this clipboard text? "
+                                            "Your current license location is: " +
+                                            QDir::toNativeSeparators(licenseFile.fileName()));
         if (result == QMessageBox::No)
             return;
     } else {
         auto result = QMessageBox::question(parent,
                                             "Create GAMS license file?",
-                                            "It looks like there is a GAMS license on the clipboard. "
-                                            "Do you want to create a license file from this text? "
-                                            "Your GAMS license location will be: " + licenseFile.fileName());
+                                            "It looks like there is a GAMS license in the clipboard. "
+                                            "Do you want to create a license file from this clipboard text? "
+                                            "Your GAMS license location will be: " +
+                                            QDir::toNativeSeparators(licenseFile.fileName()));
         if (result == QMessageBox::No)
             return;
     }
 
-    if (licenseFile.open(QFile::WriteOnly)) {
+    if (licenseFile.open(QFile::WriteOnly | QFile::Text)) {
         QTextStream stream(&licenseFile);
         stream << licenseLines.join("\n");
         licenseFile.close();
+    } else {
+        auto logger = SysLogLocator::systemLog();
+        logger->append("Unable to open file " +
+                       QDir::toNativeSeparators(licenseFile.fileName()) +
+                       ": " + licenseFile.errorString(),
+                       LogMsgType::Error);
     }
 }
 
-bool AboutGAMSDialog::isValidLicense(QStringList &license)
-{
-    if (license.count() < 5)
-        return false;
-
-    for (int i=0; i<license.size(); ++i) {
-        license[i] = license[i].trimmed();
-        if (license[i].count() == 65)
-            continue;
-        else
-            return false;
-    }
-
-    if (license[0].at(54) != ':' && license[0].at(54) != '/')
-        return false;
-
-    // Most of the platform keys listed below are relevant for Studio.
-    // WIN, WEX, LEX, DEX, SOX, AIX, SIS, BGP, LNX, SOL, DAR, DII, GEN, ALL
-    if (!license[0].endsWith("-WIN") && !license[0].endsWith("-LNX") &&
-        !license[0].endsWith("-DAR") && !license[0].endsWith("-GEN") &&
-        !license[0].endsWith("-ALL"))
-        return false;
-
-    if (!license[4].startsWith("DC"))
-        return false;
-    return true;
-}
-
 void AboutGAMSDialog::on_copylicense_clicked()
 {
     GamsProcess gproc;
diff --git a/src/support/aboutgamsdialog.h b/src/support/aboutgamsdialog.h
index b84592d0d..fde0e03d3 100644
--- a/src/support/aboutgamsdialog.h
+++ b/src/support/aboutgamsdialog.h
@@ -45,7 +45,6 @@ class AboutGAMSDialog : public QDialog
 private:
     QString gamsLicense();
     void createLicenseFile(QWidget *parent);
-    bool isValidLicense(QStringList &license);
 
 private slots:
     void on_copylicense_clicked();
diff --git a/src/support/gamslicenseinfo.cpp b/src/support/gamslicenseinfo.cpp
index c70543d6d..c792b6db8 100644
--- a/src/support/gamslicenseinfo.cpp
+++ b/src/support/gamslicenseinfo.cpp
@@ -152,6 +152,16 @@ QString GamsLicenseInfo::solverLicense(int solverId) const
     return "Expired";
 }
 
+bool GamsLicenseInfo::isLicenseValid(const QStringList &license)
+{
+    int i = 1;
+    for (auto line: license) {
+        palLicenseRegisterGAMS(mPAL, i++, line.toStdString().c_str());
+    }
+    palLicenseRegisterGAMSDone(mPAL);
+    return palLicenseValidation(mPAL) ? false : true;
+}
+
 char* GamsLicenseInfo::solverCodes(int solverId) const
 {
     char msg[GMS_SSSIZE];
@@ -161,7 +171,7 @@ char* GamsLicenseInfo::solverCodes(int solverId) const
 
 int GamsLicenseInfo::errorCallback(int count, const char *message)
 {
-    Q_UNUSED(count);
+    Q_UNUSED(count)
     auto logger = SysLogLocator::systemLog();
     logger->append(InvalidGAMS, LogMsgType::Error);
     logger->append(message, LogMsgType::Error);
diff --git a/src/support/gamslicenseinfo.h b/src/support/gamslicenseinfo.h
index 760de38f8..eb668cbc3 100644
--- a/src/support/gamslicenseinfo.h
+++ b/src/support/gamslicenseinfo.h
@@ -54,6 +54,8 @@ class GamsLicenseInfo
 
     QString solverLicense(int solverId) const;
 
+    bool isLicenseValid(const QStringList &license);
+
 private:
     char* solverCodes(int solverId) const;
 
diff --git a/src/syntax/syntaxhighlighter.cpp b/src/syntax/syntaxhighlighter.cpp
index 2234d2d43..c646f8c19 100644
--- a/src/syntax/syntaxhighlighter.cpp
+++ b/src/syntax/syntaxhighlighter.cpp
@@ -276,6 +276,8 @@ const QVector<SyntaxKind> invalidParenthesesSyntax = {
     SyntaxKind::Title,
     SyntaxKind::String,
     SyntaxKind::Assignment,
+    SyntaxKind::AssignmentLabel,
+    SyntaxKind::AssignmentValue,
     SyntaxKind::CommentLine,
     SyntaxKind::CommentBlock,
     SyntaxKind::CommentEndline,
diff --git a/src/syntax/textmarkrepo.cpp b/src/syntax/textmarkrepo.cpp
index 92825c641..8417ffdfe 100644
--- a/src/syntax/textmarkrepo.cpp
+++ b/src/syntax/textmarkrepo.cpp
@@ -241,7 +241,7 @@ const LineMarks *TextMarkRepo::marks(FileId fileId)
 void TextMarkRepo::shiftMarks(FileId fileId, int firstLine, int lineShift)
 {
     LineMarks *marks = mMarks.value(fileId);
-    if (!marks->size() || !lineShift) return;
+    if (!marks || !marks->size() || !lineShift) return;
     QSet<int> changedLines;
     changedLines.reserve(marks->size()*2);
     QMutableMapIterator<int, TextMark*> it(*marks);
diff --git a/version b/version
index 8c0bb6467..a6abc7e98 100644
--- a/version
+++ b/version
@@ -21,7 +21,7 @@
 # Current GAMS Studio version.
 STUDIO_MAJOR_VERSION=0
 STUDIO_MINOR_VERSION=12
-STUDIO_PATCH_LEVEL=7
+STUDIO_PATCH_LEVEL=8
 VERSION='$$STUDIO_MAJOR_VERSION'.'$$STUDIO_MINOR_VERSION'.'$$STUDIO_PATCH_LEVEL'
 
 # Minimum required GAMS Distribution version, which