diff --git a/OMNotebook/OMNotebookGUI/cellapplication.cpp b/OMNotebook/OMNotebookGUI/cellapplication.cpp
index dbc3174f83b..b4d3d556af4 100644
--- a/OMNotebook/OMNotebookGUI/cellapplication.cpp
+++ b/OMNotebook/OMNotebookGUI/cellapplication.cpp
@@ -125,6 +125,9 @@ namespace IAEX
     //Create a commandCenter.
     cmdCenter_ = new CellCommandCenter(this);
 
+    // set the plot command silent in OMC
+    OmcInteractiveEnvironment::setPlotSilent(tr("true"));
+
     // 2006-04-10 AF, use environment variable to find xml files
     QString openmodelica = OmcInteractiveEnvironment::OpenModelicaHome();
 
diff --git a/OMNotebook/OMNotebookGUI/graphcell.cpp b/OMNotebook/OMNotebookGUI/graphcell.cpp
index 13ed8f90acb..c0d12eb8ff9 100644
--- a/OMNotebook/OMNotebookGUI/graphcell.cpp
+++ b/OMNotebook/OMNotebookGUI/graphcell.cpp
@@ -1307,79 +1307,18 @@ namespace IAEX {
   bool GraphCell::isEvaluated()
   {
     return evaluated_;
-  }
-
-  bool GraphCell::isQtPlot(QString text)
-  {
-    QRegExp exp("plot[ ]*\\(.*\\)|plotParametric[ ]*\\(.*\\)|plotAll[ ]*\\(.*\\)" );
-
-    if( text.isNull() )
-    {
-      if( 0 <= input_->toPlainText().indexOf( exp, 0 ) )
-        return true;
-      else
-        return false;
-    }
-    else
-    {
-      if( 0 <= text.indexOf( exp, 0 ) )
-        return true;
-      else
-        return false;
-    }
-  }
-
-  QString GraphCell::getQtPlot(QString text)
-  {
-    QRegExp exp("plot[ ]*\\(.*\\)|plotParametric[ ]*\\(.*\\)|plotAll[ ]*\\(.*\\)" );
-
-    if( text.isNull() )
-    {
-      if( 0 <= input_->toPlainText().indexOf( exp, 0 ) )
-        return exp.cap(0);
-      else
-        return "";
-    }
-    else
-    {
-      if( 0 <= text.indexOf( exp, 0 ) )
-        return exp.cap(0);
-      else
-        return "";
-    }
-  }
+  }  
 
   void GraphCell::setExpr(QString expr)
   {
     input_->setPlainText(expr);
   }
 
-  bool GraphCell::isVisualize(QString text)
-  {
-    QRegExp exp( "visualize[ ]*\\((.*)" );
-
-
-    if( text.isNull() )
-    {
-      if( 0 <= input_->toPlainText().indexOf( exp, 0 ) )
-        return true;
-      else
-        return false;
-    }
-    else
-    {
-      if( 0 <= text.indexOf( exp, 0 ) )
-        return true;
-      else
-        return false;
-
-    }
-  }
-
   void GraphCell::plotVariables(QStringList lst)
   {
     try
     {
+      mpPlotWindow->show();
       // clear any curves if we have.
       foreach (PlotCurve *pPlotCurve, mpPlotWindow->getPlot()->getPlotCurvesList())
       {
@@ -1468,29 +1407,6 @@ namespace IAEX {
       output_->update();
       QCoreApplication::processEvents();
 
-      // remove plot.png if it already exist, don't want any
-      // old plot.
-      bool newPlot = isQtPlot(input_->toPlainText());
-
-      if(newPlot)
-      {
-        mpPlotWindow->show();
-        setClosed(false);
-        // make the plot command silent i.e don't pop-up the OMPlot window.
-        QString plotCmd = getQtPlot(input_->toPlainText());
-        QString plotArgs = plotCmd.mid(plotCmd.indexOf("(")+1);
-        plotArgs = plotArgs.left(plotArgs.lastIndexOf(")"));
-        QString newPlotCmd = plotCmd.left(plotCmd.lastIndexOf(")"));
-        if (plotArgs.trimmed().length() > 0)
-          newPlotCmd = newPlotCmd.append(",silent=true)");
-        else
-          newPlotCmd = newPlotCmd.append("silent=true)");
-        expr.replace(plotCmd, newPlotCmd, Qt::CaseInsensitive);
-      }
-
-      // 2006-02-02 AF, Added try-catch
-      QString res, error;
-
       // 2005-11-24 AF, added check to see if the user wants to quit
       if( 0 == expr.indexOf( "quit()", 0, Qt::CaseSensitive ))
       {
@@ -1511,7 +1427,6 @@ namespace IAEX {
           EvalThread* et = new EvalThread(getDelegate(), expr);
           connect(et, SIGNAL(finished()), this, SLOT(delegateFinished()));
           et->start();
-          if (!newPlot) { et->wait(); }
         }
         catch( exception &e )
         {
@@ -1545,6 +1460,7 @@ namespace IAEX {
         plotVariables(resLst);
         res = tr("");
       }
+      else { mpPlotWindow->hide(); }
     }
     // if user has mixed plot command with other OMC commands.
     // we must extract the plot command result.
@@ -1559,8 +1475,10 @@ namespace IAEX {
         {
           plotVariables(resLst);
         }
+        else { mpPlotWindow->hide(); }
       }
     }
+    else { mpPlotWindow->hide(); }
 
     if( res.isEmpty() && (error.isEmpty() || error.size() == 0) )
     {
diff --git a/OMNotebook/OMNotebookGUI/graphcell.h b/OMNotebook/OMNotebookGUI/graphcell.h
index aa45cbb1929..1dd07eab0eb 100644
--- a/OMNotebook/OMNotebookGUI/graphcell.h
+++ b/OMNotebook/OMNotebookGUI/graphcell.h
@@ -87,9 +87,6 @@ namespace IAEX
     virtual bool isClosed();              // Added 2006-01-17 AF
     virtual bool isEditable();
     virtual bool isEvaluated();              // Added 2005-11-23 AF
-    virtual bool isQtPlot(QString text = QString::null);
-    virtual QString getQtPlot(QString text = QString::null);
-    virtual bool isVisualize(QString text = QString::null);
 
     void plotVariables(QStringList lst);
 
diff --git a/OMNotebook/OMNotebookGUI/notebook.cpp b/OMNotebook/OMNotebookGUI/notebook.cpp
index 6e77b99573d..b3980008c0f 100644
--- a/OMNotebook/OMNotebookGUI/notebook.cpp
+++ b/OMNotebook/OMNotebookGUI/notebook.cpp
@@ -2865,7 +2865,7 @@ void NotebookWindow::saveas()
     //window->insertImage(filename);
     //window->SaveSketchImage(filename);
 
-    QMessageBox::about(this,"entered ","image witten ");
+    //QMessageBox::about(this,"entered ","image witten ");
 
     statusBar()->showMessage("Saving file");
     application()->commandCenter()->executeCommand(new SaveDocumentCommand(subject_, filename));
diff --git a/OMNotebook/OMNotebookGUI/notebookcommands.h b/OMNotebook/OMNotebookGUI/notebookcommands.h
index b2d38d0b2e1..7e4ae031c81 100644
--- a/OMNotebook/OMNotebookGUI/notebookcommands.h
+++ b/OMNotebook/OMNotebookGUI/notebookcommands.h
@@ -179,8 +179,8 @@ namespace IAEX
             file.fileName().toStdString();
           throw runtime_error( msg.c_str() );
         }
-        
-        if(file.exists() && (fileInfo.permission(QFile::WriteUser) != true))
+
+        if(file.exists() && (file.permissions().testFlag(QFile::WriteUser) != true))
         {
           string msg = "The file for saving the document is not writable: " + 
             file.fileName().toStdString() + "\nPlease use Save As.";
diff --git a/OMNotebook/OMNotebookGUI/omcinteractiveenvironment.cpp b/OMNotebook/OMNotebookGUI/omcinteractiveenvironment.cpp
index 4f6d8188c28..2b7d525fcc2 100644
--- a/OMNotebook/OMNotebookGUI/omcinteractiveenvironment.cpp
+++ b/OMNotebook/OMNotebookGUI/omcinteractiveenvironment.cpp
@@ -280,6 +280,17 @@ namespace IAEX
     return version;
   }
 
+  bool OmcInteractiveEnvironment::setPlotSilent(QString silent)
+  {
+    OmcInteractiveEnvironment *env = OmcInteractiveEnvironment::getInstance();
+    env->evalExpression(QString("setPlotSilent("+silent+")"));
+    QString result = env->getResult();
+    if (result.toLower().compare("true") == 0)
+      return true;
+    else
+      return false;
+  }
+
   QString OmcInteractiveEnvironment::OpenModelicaHome()
   {
     OmcInteractiveEnvironment *env = OmcInteractiveEnvironment::getInstance();
diff --git a/OMNotebook/OMNotebookGUI/omcinteractiveenvironment.h b/OMNotebook/OMNotebookGUI/omcinteractiveenvironment.h
index c41af82d9ad..416ac68a342 100644
--- a/OMNotebook/OMNotebookGUI/omcinteractiveenvironment.h
+++ b/OMNotebook/OMNotebookGUI/omcinteractiveenvironment.h
@@ -56,6 +56,7 @@ namespace IAEX
     virtual bool startDelegate();
     static bool startOMC();
     static QString OMCVersion();
+    static bool setPlotSilent(QString silent);
     static QString OpenModelicaHome();
     static QString TmpPath();
 
diff --git a/OMNotebook/OMNotebookGUI/xmlparser.cpp b/OMNotebook/OMNotebookGUI/xmlparser.cpp
index 93ff6c4e4cc..fa28f5740da 100644
--- a/OMNotebook/OMNotebookGUI/xmlparser.cpp
+++ b/OMNotebook/OMNotebookGUI/xmlparser.cpp
@@ -572,11 +572,7 @@ namespace IAEX
         else if( e.tagName() == XML_OUTPUTPART )
         {
           GraphCell *iCell = dynamic_cast<GraphCell*>(graphcell);
-
-          if( iCell->isQtPlot() )
-            iCell->setTextOutputHtml( e.text() );
-          else
-            iCell->setTextOutput( e.text() );
+          iCell->setTextOutput( e.text() );
         }
         else if( e.tagName() == XML_IMAGE )
         {