diff --git a/Modules/Python/QmitkPythonVariableStackTableModel.cpp b/Modules/Python/QmitkPythonVariableStackTableModel.cpp
index 38ecedaf89..f213bf8641 100755
--- a/Modules/Python/QmitkPythonVariableStackTableModel.cpp
+++ b/Modules/Python/QmitkPythonVariableStackTableModel.cpp
@@ -1,225 +1,226 @@
 /*===================================================================
 
 The Medical Imaging Interaction Toolkit (MITK)
 
 Copyright (c) German Cancer Research Center,
 Division of Medical and Biological Informatics.
 All rights reserved.
 
 This software is distributed WITHOUT ANY WARRANTY; without
 even the implied warranty of MERCHANTABILITY or FITNESS FOR
 A PARTICULAR PURPOSE.
 
 See LICENSE.txt or http://www.mitk.org for details.
 
 ===================================================================*/
 
 #include "QmitkPythonVariableStackTableModel.h"
 #include <QMimeData>
 #include <usModuleContext.h>
 #include <mitkDataNode.h>
 #include <usGetModuleContext.h>
 #include <QStringList>
 #include <QMessageBox>
 #include "QmitkMimeTypes.h"
 
 const QString QmitkPythonVariableStackTableModel::MITK_IMAGE_VAR_NAME = "mitkImage";
 const QString QmitkPythonVariableStackTableModel::MITK_SURFACE_VAR_NAME = "mitkSurface";
 
 QmitkPythonVariableStackTableModel::QmitkPythonVariableStackTableModel(QObject *parent)
     :QAbstractTableModel(parent)
 {
     us::ModuleContext* context = us::GetModuleContext();
     m_PythonServiceRef = context->GetServiceReference<mitk::IPythonService>();
     m_PythonService = context->GetService<mitk::IPythonService>(m_PythonServiceRef);
     m_PythonService->AddPythonCommandObserver( this );
 }
 
 QmitkPythonVariableStackTableModel::~QmitkPythonVariableStackTableModel()
 {
   us::ModuleContext* context = us::GetModuleContext();
   context->UngetService( m_PythonServiceRef );
   m_PythonService->RemovePythonCommandObserver( this );
 }
 
 bool QmitkPythonVariableStackTableModel::dropMimeData ( const QMimeData * data, Qt::DropAction action, int row, int column, const QModelIndex & parent )
 {
     // Early exit, returning true, but not actually doing anything (ignoring data).
     if (action == Qt::IgnoreAction)
         return true;
 
     // Note, we are returning true if we handled it, and false otherwise
     bool returnValue = false;
 
     if(data->hasFormat(QmitkMimeTypes::DataNodePtrs))
     {
         MITK_DEBUG("QmitkPythonVariableStackTableModel") << "dropped MITK DataNode";
         returnValue = true;
 
         int i = 0;
         QList<mitk::DataNode*> dataNodeList = QmitkMimeTypes::ToDataNodePtrList(data);
         mitk::DataNode* node = NULL;
         foreach(node, dataNodeList)
         {
           mitk::Image* mitkImage = dynamic_cast<mitk::Image*>(node->GetData());
           MITK_DEBUG("QmitkPythonVariableStackTableModel") << "mitkImage is not null " << (mitkImage != 0? "true": "false");
 
           QRegExp rx("^\\d");
           QString varName(node->GetName().c_str());
           // regex replace every character that is not allowed in a python variable
           varName = varName.replace(QRegExp("[.\\+\\-*\\s\\/\\n\\t\\r]"),QString("_"));
 
           if( mitkImage )
           {
             if ( varName.isEmpty() )
               varName = MITK_IMAGE_VAR_NAME;
             if ( rx.indexIn(varName) == 0)
               varName.prepend("_").prepend(MITK_IMAGE_VAR_NAME);
 
             if( i > 0 )
               varName = QString("%1%2").arg(varName).arg(i);
             MITK_DEBUG("QmitkPythonVariableStackTableModel") << "varName" << varName.toStdString();
 
             bool exportAsCvImage = mitkImage->GetDimension() == 2 && m_PythonService->IsOpenCvPythonWrappingAvailable();
 
             if( exportAsCvImage )
             {
               int ret = QMessageBox::question(NULL, "Export option",
                 "2D image detected. Export as OpenCV image to Python instead of an SimpleITK image?",
                                               QMessageBox::Yes | QMessageBox::No, QMessageBox::No);
               exportAsCvImage = ret == QMessageBox::Yes;
               if(exportAsCvImage)
               {
                 varName = MITK_IMAGE_VAR_NAME;
                 m_PythonService->CopyToPythonAsCvImage( mitkImage, varName.toStdString() );
                 ++i;
               }
             }
             if( !exportAsCvImage )
             {
               if( m_PythonService->IsSimpleItkPythonWrappingAvailable() )
               {
                 m_PythonService->CopyToPythonAsSimpleItkImage( mitkImage, varName.toStdString() );
                 ++i;
               }
               else
               {
                 MITK_ERROR << "SimpleITK Python wrapping not available. Skipping export for image " << node->GetName();
               }
             }
           }
           else
           {
             mitk::Surface* surface = dynamic_cast<mitk::Surface*>(node->GetData());
             MITK_DEBUG("QmitkPythonVariableStackTableModel") << "found surface";
 
             if( surface )
             {
               if (varName.isEmpty() )
                 varName =  MITK_SURFACE_VAR_NAME;
               if ( rx.indexIn(varName) == 0)
                 varName.prepend("_").prepend(MITK_SURFACE_VAR_NAME);
 
               MITK_DEBUG("QmitkPythonVariableStackTableModel") << "varName" << varName;
 
               if( m_PythonService->IsVtkPythonWrappingAvailable() )
               {
                 m_PythonService->CopyToPythonAsVtkPolyData( surface, varName.toStdString() );
               }
               else
               {
                 MITK_ERROR << "VTK Python wrapping not available. Skipping export for surface " << node->GetName();
               }
             }
           }
         }
     }
     return returnValue;
 }
 
 QVariant QmitkPythonVariableStackTableModel::headerData(int section, Qt::Orientation orientation,
                                                         int role) const
 {
     QVariant headerData;
 
     // show only horizontal header
     if ( role == Qt::DisplayRole )
     {
         if( orientation == Qt::Horizontal )
         {
             // first column: "Attribute"
             if(section == 0)
                 headerData = "Attribute";
             else if(section == 1)
                 headerData = "Type";
             else if(section == 2)
                 headerData = "Value";
         }
     }
 
     return headerData;
 }
 
 Qt::ItemFlags QmitkPythonVariableStackTableModel::flags(const QModelIndex &index) const
 {
     Qt::ItemFlags flags = QAbstractItemModel::flags(index);
 
     if(index.isValid())
         return Qt::ItemIsDragEnabled | Qt::ItemIsDropEnabled | flags;
     else
         return Qt::ItemIsDropEnabled | flags;
 }
 
 int QmitkPythonVariableStackTableModel::rowCount(const QModelIndex &) const
 {
     return m_VariableStack.size();
 }
 
 int QmitkPythonVariableStackTableModel::columnCount(const QModelIndex &) const
 {
     return 3;
 }
 
 QVariant QmitkPythonVariableStackTableModel::data(const QModelIndex &index, int role) const
 {
     if (index.isValid() && !m_VariableStack.empty())
     {
         if(role == Qt::DisplayRole)
         {
             mitk::PythonVariable item = m_VariableStack.at(index.row());
             if(index.column() == 0)
               return QString::fromStdString(item.m_Name);
             if(index.column() == 1)
                 return QString::fromStdString(item.m_Type);
             if(index.column() == 2)
                 return QString::fromStdString(item.m_Value);
         }
     }
     return QVariant();
 }
 
 QStringList QmitkPythonVariableStackTableModel::mimeTypes() const
 {
     return QAbstractTableModel::mimeTypes();
     QStringList types;
     types << "application/x-mitk-datanodes";
     types << "application/x-qabstractitemmodeldatalist";
     return types;
 }
 
 Qt::DropActions QmitkPythonVariableStackTableModel::supportedDropActions() const
 {
     return Qt::CopyAction | Qt::MoveAction;
 }
 
 void QmitkPythonVariableStackTableModel::CommandExecuted(const std::string& pythonCommand)
 {
   MITK_DEBUG("QmitkPythonVariableStackTableModel") << "command was executed " << pythonCommand;
     m_VariableStack = m_PythonService->GetVariableStack();
-    QAbstractTableModel::reset();
+    QAbstractTableModel::beginResetModel();
+    QAbstractTableModel::endResetModel();
 }
 
 std::vector<mitk::PythonVariable> QmitkPythonVariableStackTableModel::GetVariableStack() const
 {
     return m_VariableStack;
 }