diff --git a/Core/Code/Rendering/mitkBaseRenderer.cpp b/Core/Code/Rendering/mitkBaseRenderer.cpp
index 93086181f4..30ceb8082c 100644
--- a/Core/Code/Rendering/mitkBaseRenderer.cpp
+++ b/Core/Code/Rendering/mitkBaseRenderer.cpp
@@ -1,888 +1,889 @@
 /*===================================================================
 
  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 "mitkBaseRenderer.h"
 #include "mitkMapper.h"
 #include "mitkResliceMethodProperty.h"
 #include "mitkKeyEvent.h"
 
 // Geometries
 #include "mitkPlaneGeometry.h"
 #include "mitkSlicedGeometry3D.h"
 
 // Controllers
 #include "mitkCameraController.h"
 #include "mitkSliceNavigationController.h"
 #include "mitkCameraRotationController.h"
 #include "mitkVtkInteractorCameraController.h"
 
 #ifdef MITK_USE_TD_MOUSE
 #include "mitkTDMouseVtkCameraController.h"
 #else
 #include "mitkCameraController.h"
 #endif
 
 #include "mitkVtkLayerController.h"
 
 // Events // TODO: INTERACTION_LEGACY
 #include "mitkEventMapper.h"
 #include "mitkGlobalInteraction.h"
 #include "mitkPositionEvent.h"
 #include "mitkDisplayPositionEvent.h"
 #include "mitkProperties.h"
 #include "mitkWeakPointerProperty.h"
 #include "mitkInteractionConst.h"
 #include "mitkOverlayManager.h"
 
 // VTK
 #include <vtkLinearTransform.h>
 #include <vtkRenderer.h>
 #include <vtkRenderWindow.h>
 #include <vtkCamera.h>
 
 #include <vtkProperty.h>
 #include <vtkPolyDataMapper.h>
 #include <vtkActor.h>
 
 mitk::BaseRenderer::BaseRendererMapType mitk::BaseRenderer::baseRendererMap;
 
 mitk::BaseRenderer* mitk::BaseRenderer::GetInstance(vtkRenderWindow * renWin)
 {
   for (BaseRendererMapType::iterator mapit = baseRendererMap.begin(); mapit != baseRendererMap.end(); mapit++)
   {
     if ((*mapit).first == renWin)
       return (*mapit).second;
   }
   return NULL;
 }
 
 void mitk::BaseRenderer::AddInstance(vtkRenderWindow* renWin, BaseRenderer* baseRenderer)
 {
   if (renWin == NULL || baseRenderer == NULL)
     return;
 
   // ensure that no BaseRenderer is managed twice
   mitk::BaseRenderer::RemoveInstance(renWin);
 
   baseRendererMap.insert(BaseRendererMapType::value_type(renWin, baseRenderer));
 }
 
 void mitk::BaseRenderer::RemoveInstance(vtkRenderWindow* renWin)
 {
   BaseRendererMapType::iterator mapit = baseRendererMap.find(renWin);
   if (mapit != baseRendererMap.end())
     baseRendererMap.erase(mapit);
 }
 
 mitk::BaseRenderer* mitk::BaseRenderer::GetByName(const std::string& name)
 {
   for (BaseRendererMapType::iterator mapit = baseRendererMap.begin(); mapit != baseRendererMap.end(); mapit++)
   {
     if ((*mapit).second->m_Name == name)
       return (*mapit).second;
   }
   return NULL;
 }
 
 vtkRenderWindow* mitk::BaseRenderer::GetRenderWindowByName(const std::string& name)
 {
   for (BaseRendererMapType::iterator mapit = baseRendererMap.begin(); mapit != baseRendererMap.end(); mapit++)
   {
     if ((*mapit).second->m_Name == name)
       return (*mapit).first;
   }
   return NULL;
 }
 
 mitk::BaseRenderer::BaseRenderer(const char* name, vtkRenderWindow * renWin, mitk::RenderingManager* rm) :
     m_RenderWindow(NULL), m_VtkRenderer(NULL), m_MapperID(defaultMapper), m_DataStorage(NULL), m_RenderingManager(rm), m_LastUpdateTime(0), m_CameraController(
         NULL), m_SliceNavigationController(NULL), m_CameraRotationController(NULL), /*m_Size(),*/
     m_Focused(false), m_WorldGeometry(NULL), m_WorldTimeGeometry(NULL), m_CurrentWorldGeometry(NULL), m_CurrentWorldGeometry2D(NULL), m_DisplayGeometry(
         NULL), m_Slice(0), m_TimeStep(), m_CurrentWorldGeometry2DUpdateTime(), m_DisplayGeometryUpdateTime(), m_TimeStepUpdateTime(), m_WorldGeometryData(
         NULL), m_DisplayGeometryData(NULL), m_CurrentWorldGeometry2DData(NULL), m_WorldGeometryNode(NULL), m_DisplayGeometryNode(NULL), m_CurrentWorldGeometry2DNode(
         NULL), m_DisplayGeometryTransformTime(0), m_CurrentWorldGeometry2DTransformTime(0), m_Name(name), /*m_Bounds(),*/m_EmptyWorldGeometry(
         true), m_DepthPeelingEnabled(true), m_MaxNumberOfPeels(100), m_NumberOfVisibleLODEnabledMappers(0)
 {
   m_Bounds[0] = 0;
   m_Bounds[1] = 0;
   m_Bounds[2] = 0;
   m_Bounds[3] = 0;
   m_Bounds[4] = 0;
   m_Bounds[5] = 0;
 
   if (name != NULL)
   {
     m_Name = name;
   }
   else
   {
     m_Name = "unnamed renderer";
     itkWarningMacro(<< "Created unnamed renderer. Bad for serialization. Please choose a name.");
   }
 
   if (renWin != NULL)
   {
     m_RenderWindow = renWin;
     m_RenderWindow->Register(NULL);
   }
   else
   {
     itkWarningMacro(<< "Created mitkBaseRenderer without vtkRenderWindow present.");
   }
 
   m_Size[0] = 0;
   m_Size[1] = 0;
 
   //instances.insert( this );
 
   //adding this BaseRenderer to the List of all BaseRenderer
   // TODO: INTERACTION_LEGACY
   m_RenderingManager->GetGlobalInteraction()->AddFocusElement(this);
 
   m_BindDispatcherInteractor = new mitk::BindDispatcherInteractor( GetName() );
 
   WeakPointerProperty::Pointer rendererProp = WeakPointerProperty::New((itk::Object*) this);
 
   m_CurrentWorldGeometry2D = mitk::PlaneGeometry::New();
 
   m_CurrentWorldGeometry2DData = mitk::Geometry2DData::New();
   m_CurrentWorldGeometry2DData->SetGeometry2D(m_CurrentWorldGeometry2D);
   m_CurrentWorldGeometry2DNode = mitk::DataNode::New();
   m_CurrentWorldGeometry2DNode->SetData(m_CurrentWorldGeometry2DData);
   m_CurrentWorldGeometry2DNode->GetPropertyList()->SetProperty("renderer", rendererProp);
   m_CurrentWorldGeometry2DNode->GetPropertyList()->SetProperty("layer", IntProperty::New(1000));
 
   m_CurrentWorldGeometry2DNode->SetProperty("reslice.thickslices", mitk::ResliceMethodProperty::New());
   m_CurrentWorldGeometry2DNode->SetProperty("reslice.thickslices.num", mitk::IntProperty::New(1));
 
   m_CurrentWorldGeometry2DTransformTime = m_CurrentWorldGeometry2DNode->GetVtkTransform()->GetMTime();
 
   m_DisplayGeometry = mitk::DisplayGeometry::New();
   m_DisplayGeometry->SetWorldGeometry(m_CurrentWorldGeometry2D);
   m_DisplayGeometryData = mitk::Geometry2DData::New();
   m_DisplayGeometryData->SetGeometry2D(m_DisplayGeometry);
   m_DisplayGeometryNode = mitk::DataNode::New();
   m_DisplayGeometryNode->SetData(m_DisplayGeometryData);
   m_DisplayGeometryNode->GetPropertyList()->SetProperty("renderer", rendererProp);
   m_DisplayGeometryTransformTime = m_DisplayGeometryNode->GetVtkTransform()->GetMTime();
 
   mitk::SliceNavigationController::Pointer sliceNavigationController = mitk::SliceNavigationController::New("navigation");
   sliceNavigationController->SetRenderer(this);
   sliceNavigationController->ConnectGeometrySliceEvent(this);
   sliceNavigationController->ConnectGeometryUpdateEvent(this);
   sliceNavigationController->ConnectGeometryTimeEvent(this, false);
   m_SliceNavigationController = sliceNavigationController;
 
   m_CameraRotationController = mitk::CameraRotationController::New();
   m_CameraRotationController->SetRenderWindow(m_RenderWindow);
   m_CameraRotationController->AcquireCamera();
 
 //if TD Mouse Interaction is activated, then call TDMouseVtkCameraController instead of VtkInteractorCameraController
 #ifdef MITK_USE_TD_MOUSE
   m_CameraController = mitk::TDMouseVtkCameraController::New();
 #else
   m_CameraController = mitk::CameraController::New(NULL);
 #endif
 
   m_VtkRenderer = vtkRenderer::New();
 
   if (mitk::VtkLayerController::GetInstance(m_RenderWindow) == NULL)
   {
     mitk::VtkLayerController::AddInstance(m_RenderWindow, m_VtkRenderer);
     mitk::VtkLayerController::GetInstance(m_RenderWindow)->InsertSceneRenderer(m_VtkRenderer);
   }
   else
     mitk::VtkLayerController::GetInstance(m_RenderWindow)->InsertSceneRenderer(m_VtkRenderer);
 }
 
 mitk::BaseRenderer::~BaseRenderer()
 {
+  if (m_OverlayManager.IsNotNull())
+  {
+    m_OverlayManager->RemoveBaseRenderer(this);
+  }
+
   if (m_VtkRenderer != NULL)
   {
     m_VtkRenderer->Delete();
     m_VtkRenderer = NULL;
   }
 
   if (m_CameraController.IsNotNull())
     m_CameraController->SetRenderer(NULL);
 
   m_RenderingManager->GetGlobalInteraction()->RemoveFocusElement(this);
 
   mitk::VtkLayerController::RemoveInstance(m_RenderWindow);
 
   RemoveAllLocalStorages();
 
   m_DataStorage = NULL;
 
   if (m_BindDispatcherInteractor != NULL)
   {
     delete m_BindDispatcherInteractor;
   }
 
   if (m_RenderWindow != NULL)
   {
     m_RenderWindow->Delete();
     m_RenderWindow = NULL;
   }
 
-  if (m_OverlayManager.IsNotNull())
-  {
-    m_OverlayManager->RemoveBaseRenderer(this);
-  }
 }
 
 void mitk::BaseRenderer::RemoveAllLocalStorages()
 {
   this->InvokeEvent(mitk::BaseRenderer::RendererResetEvent());
 
   std::list<mitk::BaseLocalStorageHandler*>::iterator it;
   for (it = m_RegisteredLocalStorageHandlers.begin(); it != m_RegisteredLocalStorageHandlers.end(); it++)
     (*it)->ClearLocalStorage(this, false);
   m_RegisteredLocalStorageHandlers.clear();
 }
 
 void mitk::BaseRenderer::RegisterLocalStorageHandler(mitk::BaseLocalStorageHandler *lsh)
 {
   m_RegisteredLocalStorageHandlers.push_back(lsh);
 }
 
 mitk::Dispatcher::Pointer mitk::BaseRenderer::GetDispatcher() const
 {
   return m_BindDispatcherInteractor->GetDispatcher();
 }
 
 mitk::Point3D mitk::BaseRenderer::Map2DRendererPositionTo3DWorldPosition(Point2D* mousePosition) const
 {
   Point2D p_mm;
   Point3D position;
   if (m_MapperID == 1)
   {
     GetDisplayGeometry()->ULDisplayToDisplay(*mousePosition, *mousePosition);
     GetDisplayGeometry()->DisplayToWorld(*mousePosition, p_mm);
     GetDisplayGeometry()->Map(p_mm, position);
   }
   else if (m_MapperID == 2)
   {
     GetDisplayGeometry()->ULDisplayToDisplay(*mousePosition, *mousePosition);
     PickWorldPoint(*mousePosition, position);
   }
   return position;
 }
 
 void mitk::BaseRenderer::UnregisterLocalStorageHandler(mitk::BaseLocalStorageHandler *lsh)
 {
   m_RegisteredLocalStorageHandlers.remove(lsh);
 }
 
 void mitk::BaseRenderer::SetDataStorage(DataStorage* storage)
 {
   if (storage != NULL)
   {
     m_DataStorage = storage;
     m_BindDispatcherInteractor->SetDataStorage(m_DataStorage);
     this->Modified();
   }
 }
 
 const mitk::BaseRenderer::MapperSlotId mitk::BaseRenderer::defaultMapper = 1;
 
 void mitk::BaseRenderer::Paint()
 {
 }
 
 void mitk::BaseRenderer::Initialize()
 {
 }
 
 void mitk::BaseRenderer::Resize(int w, int h)
 {
   m_Size[0] = w;
   m_Size[1] = h;
 
   if (m_CameraController)
     m_CameraController->Resize(w, h); //(formerly problematic on windows: vtkSizeBug)
 
   GetDisplayGeometry()->SetSizeInDisplayUnits(w, h);
 }
 
 void mitk::BaseRenderer::InitRenderer(vtkRenderWindow* renderwindow)
 {
   if (m_RenderWindow != NULL)
   {
     m_RenderWindow->Delete();
   }
   m_RenderWindow = renderwindow;
   if (m_RenderWindow != NULL)
   {
     m_RenderWindow->Register(NULL);
   }
 
   RemoveAllLocalStorages();
 
   if (m_CameraController.IsNotNull())
   {
     m_CameraController->SetRenderer(this);
   }
 
   //BUG (#1551) added settings for depth peeling
   m_RenderWindow->SetAlphaBitPlanes(1);
   m_VtkRenderer->SetUseDepthPeeling(m_DepthPeelingEnabled);
   m_VtkRenderer->SetMaximumNumberOfPeels(m_MaxNumberOfPeels);
   m_VtkRenderer->SetOcclusionRatio(0.1);
 }
 
 void mitk::BaseRenderer::InitSize(int w, int h)
 {
   m_Size[0] = w;
   m_Size[1] = h;
   GetDisplayGeometry()->SetSizeInDisplayUnits(w, h, false);
   GetDisplayGeometry()->Fit();
 }
 
 void mitk::BaseRenderer::SetSlice(unsigned int slice)
 {
   if (m_Slice != slice)
   {
     m_Slice = slice;
     if (m_WorldTimeGeometry.IsNotNull())
     {
       SlicedGeometry3D* slicedWorldGeometry = dynamic_cast<SlicedGeometry3D*>(m_WorldTimeGeometry->GetGeometryForTimeStep(m_TimeStep).GetPointer());
       if (slicedWorldGeometry != NULL)
       {
         if (m_Slice >= slicedWorldGeometry->GetSlices())
           m_Slice = slicedWorldGeometry->GetSlices() - 1;
         SetCurrentWorldGeometry2D(slicedWorldGeometry->GetGeometry2D(m_Slice));
         SetCurrentWorldGeometry(slicedWorldGeometry);
       }
     }
     else
       Modified();
   }
 }
 
 void mitk::BaseRenderer::SetOverlayManager(itk::SmartPointer<OverlayManager> overlayManager)
 {
   if(overlayManager.IsNull())
     return;
 
   if(this->m_OverlayManager.IsNotNull())
   {
     if(this->m_OverlayManager.GetPointer() == overlayManager.GetPointer())
     {
       return;
     }
     else
     {
       this->m_OverlayManager->RemoveBaseRenderer(this);
     }
   }
   this->m_OverlayManager = overlayManager;
   this->m_OverlayManager->AddBaseRenderer(this); //TODO
 }
 
 itk::SmartPointer<mitk::OverlayManager> mitk::BaseRenderer::GetOverlayManager()
 {
   if(this->m_OverlayManager.IsNull())
   {
     m_OverlayManager = mitk::OverlayManager::New();
     m_OverlayManager->AddBaseRenderer(this);
   }
   return this->m_OverlayManager;
 }
 
 void mitk::BaseRenderer::SetTimeStep(unsigned int timeStep)
 {
   if (m_TimeStep != timeStep)
   {
     m_TimeStep = timeStep;
     m_TimeStepUpdateTime.Modified();
 
     if (m_WorldTimeGeometry.IsNotNull())
     {
       if (m_TimeStep >= m_WorldTimeGeometry->CountTimeSteps())
         m_TimeStep = m_WorldTimeGeometry->CountTimeSteps() - 1;
       SlicedGeometry3D* slicedWorldGeometry = dynamic_cast<SlicedGeometry3D*>(m_WorldTimeGeometry->GetGeometryForTimeStep(m_TimeStep).GetPointer());
       if (slicedWorldGeometry != NULL)
       {
         SetCurrentWorldGeometry2D(slicedWorldGeometry->GetGeometry2D(m_Slice));
         SetCurrentWorldGeometry(slicedWorldGeometry);
       }
     }
     else
       Modified();
   }
 }
 
 int mitk::BaseRenderer::GetTimeStep(const mitk::BaseData* data) const
 {
   if ((data == NULL) || (data->IsInitialized() == false))
   {
     return -1;
   }
   return data->GetTimeGeometry()->TimePointToTimeStep(GetTime());
 }
 
 mitk::ScalarType mitk::BaseRenderer::GetTime() const
 {
   if (m_WorldTimeGeometry.IsNull())
   {
     return 0;
   }
   else
   {
     ScalarType timeInMS = m_WorldTimeGeometry->TimeStepToTimePoint(GetTimeStep());
     if (timeInMS == ScalarTypeNumericTraits::NonpositiveMin())
       return 0;
     else
       return timeInMS;
   }
 }
 
 void mitk::BaseRenderer::SetWorldTimeGeometry(mitk::TimeGeometry* geometry)
 {
   assert(geometry != NULL);
 
   itkDebugMacro("setting WorldTimeGeometry to " << geometry);
   if (m_WorldTimeGeometry != geometry)
   {
     if (geometry->GetBoundingBoxInWorld()->GetDiagonalLength2() == 0)
       return;
 
     m_WorldTimeGeometry = geometry;
     itkDebugMacro("setting WorldTimeGeometry to " << m_WorldTimeGeometry);
 
     if (m_TimeStep >= m_WorldTimeGeometry->CountTimeSteps())
         m_TimeStep = m_WorldTimeGeometry->CountTimeSteps() - 1;
 
     Geometry3D* geometry3d;
     geometry3d = m_WorldTimeGeometry->GetGeometryForTimeStep(m_TimeStep);
     SetWorldGeometry3D(geometry3d);
   }
 }
 
 void mitk::BaseRenderer::SetWorldGeometry3D(mitk::Geometry3D* geometry)
 {
   itkDebugMacro("setting WorldGeometry3D to " << geometry);
 
   if (m_WorldGeometry != geometry)
   {
     if (geometry->GetBoundingBox()->GetDiagonalLength2() == 0)
       return;
 
     m_WorldGeometry = geometry;
     SlicedGeometry3D* slicedWorldGeometry;
     slicedWorldGeometry = dynamic_cast<SlicedGeometry3D*>(geometry);
 
     Geometry2D::Pointer geometry2d;
     if (slicedWorldGeometry != NULL)
     {
       if (m_Slice >= slicedWorldGeometry->GetSlices() && (m_Slice != 0))
         m_Slice = slicedWorldGeometry->GetSlices() - 1;
       geometry2d = slicedWorldGeometry->GetGeometry2D(m_Slice);
       if (geometry2d.IsNull())
       {
         PlaneGeometry::Pointer plane = mitk::PlaneGeometry::New();
         plane->InitializeStandardPlane(slicedWorldGeometry);
         geometry2d = plane;
       }
       SetCurrentWorldGeometry(slicedWorldGeometry);
     }
     else
     {
       geometry2d = dynamic_cast<Geometry2D*>(geometry);
       if (geometry2d.IsNull())
       {
         PlaneGeometry::Pointer plane = PlaneGeometry::New();
         plane->InitializeStandardPlane(geometry);
         geometry2d = plane;
       }
       SetCurrentWorldGeometry(geometry);
     }
     SetCurrentWorldGeometry2D(geometry2d); // calls Modified()
   }
   if (m_CurrentWorldGeometry2D.IsNull())
     itkWarningMacro("m_CurrentWorldGeometry2D is NULL");
 }
 
 void mitk::BaseRenderer::SetDisplayGeometry(mitk::DisplayGeometry* geometry2d)
 {
   itkDebugMacro("setting DisplayGeometry to " << geometry2d);
   if (m_DisplayGeometry != geometry2d)
   {
     m_DisplayGeometry = geometry2d;
     m_DisplayGeometryData->SetGeometry2D(m_DisplayGeometry);
     m_DisplayGeometryUpdateTime.Modified();
     Modified();
   }
 }
 
 void mitk::BaseRenderer::SetCurrentWorldGeometry2D(mitk::Geometry2D* geometry2d)
 {
   if (m_CurrentWorldGeometry2D != geometry2d)
   {
     m_CurrentWorldGeometry2D = geometry2d;
     m_CurrentWorldGeometry2DData->SetGeometry2D(m_CurrentWorldGeometry2D);
     m_DisplayGeometry->SetWorldGeometry(m_CurrentWorldGeometry2D);
     m_CurrentWorldGeometry2DUpdateTime.Modified();
     Modified();
   }
 }
 
 void mitk::BaseRenderer::SendUpdateSlice()
 {
   m_DisplayGeometryUpdateTime.Modified();
   m_CurrentWorldGeometry2DUpdateTime.Modified();
 }
 
 void mitk::BaseRenderer::SetCurrentWorldGeometry(mitk::Geometry3D* geometry)
 {
   m_CurrentWorldGeometry = geometry;
   if (geometry == NULL)
   {
     m_Bounds[0] = 0;
     m_Bounds[1] = 0;
     m_Bounds[2] = 0;
     m_Bounds[3] = 0;
     m_Bounds[4] = 0;
     m_Bounds[5] = 0;
     m_EmptyWorldGeometry = true;
     return;
   }
   BoundingBox::Pointer boundingBox = m_CurrentWorldGeometry->CalculateBoundingBoxRelativeToTransform(NULL);
   const BoundingBox::BoundsArrayType& worldBounds = boundingBox->GetBounds();
   m_Bounds[0] = worldBounds[0];
   m_Bounds[1] = worldBounds[1];
   m_Bounds[2] = worldBounds[2];
   m_Bounds[3] = worldBounds[3];
   m_Bounds[4] = worldBounds[4];
   m_Bounds[5] = worldBounds[5];
   if (boundingBox->GetDiagonalLength2() <= mitk::eps)
     m_EmptyWorldGeometry = true;
   else
     m_EmptyWorldGeometry = false;
 }
 
 void mitk::BaseRenderer::UpdateOverlays()
 {
   if(m_OverlayManager.IsNotNull())
   {
     m_OverlayManager->UpdateOverlays(this);
   }
 }
 
 void mitk::BaseRenderer::SetGeometry(const itk::EventObject & geometrySendEvent)
 {
   const SliceNavigationController::GeometrySendEvent* sendEvent =
       dynamic_cast<const SliceNavigationController::GeometrySendEvent *>(&geometrySendEvent);
 
   assert(sendEvent!=NULL);
   SetWorldTimeGeometry(sendEvent->GetTimeGeometry());
 }
 
 void mitk::BaseRenderer::UpdateGeometry(const itk::EventObject & geometryUpdateEvent)
 {
   const SliceNavigationController::GeometryUpdateEvent* updateEvent =
       dynamic_cast<const SliceNavigationController::GeometryUpdateEvent*>(&geometryUpdateEvent);
 
   if (updateEvent == NULL)
     return;
 
   if (m_CurrentWorldGeometry.IsNotNull())
   {
     SlicedGeometry3D* slicedWorldGeometry = dynamic_cast<SlicedGeometry3D*>(m_CurrentWorldGeometry.GetPointer());
     if (slicedWorldGeometry)
     {
       Geometry2D* geometry2D = slicedWorldGeometry->GetGeometry2D(m_Slice);
 
       SetCurrentWorldGeometry2D(geometry2D); // calls Modified()
     }
   }
 }
 
 void mitk::BaseRenderer::SetGeometrySlice(const itk::EventObject & geometrySliceEvent)
 {
   const SliceNavigationController::GeometrySliceEvent* sliceEvent =
       dynamic_cast<const SliceNavigationController::GeometrySliceEvent *>(&geometrySliceEvent);
 
   assert(sliceEvent!=NULL);
   SetSlice(sliceEvent->GetPos());
 }
 
 void mitk::BaseRenderer::SetGeometryTime(const itk::EventObject & geometryTimeEvent)
 {
   const SliceNavigationController::GeometryTimeEvent * timeEvent =
       dynamic_cast<const SliceNavigationController::GeometryTimeEvent *>(&geometryTimeEvent);
 
   assert(timeEvent!=NULL);
   SetTimeStep(timeEvent->GetPos());
 }
 
 const double* mitk::BaseRenderer::GetBounds() const
 {
   return m_Bounds;
 }
 
 void mitk::BaseRenderer::MousePressEvent(mitk::MouseEvent *me)
 {
   //set the Focus on the renderer
   /*bool success =*/m_RenderingManager->GetGlobalInteraction()->SetFocus(this);
   /*
    if (! success)
    mitk::StatusBar::GetInstance()->DisplayText("Warning! from mitkBaseRenderer.cpp: Couldn't focus this BaseRenderer!");
    */
 
   //if (m_CameraController)
   //{
   //  if(me->GetButtonState()!=512) // provisorisch: Ctrl nicht durchlassen. Bald wird aus m_CameraController eine StateMachine
   //    m_CameraController->MousePressEvent(me);
   //}
   if (m_MapperID == 1)
   {
     Point2D p(me->GetDisplayPosition());
     Point2D p_mm;
     Point3D position;
     GetDisplayGeometry()->ULDisplayToDisplay(p, p);
     GetDisplayGeometry()->DisplayToWorld(p, p_mm);
     GetDisplayGeometry()->Map(p_mm, position);
     mitk::PositionEvent event(this, me->GetType(), me->GetButton(), me->GetButtonState(), mitk::Key_unknown, p, position);
     mitk::EventMapper::MapEvent(&event, m_RenderingManager->GetGlobalInteraction());
   }
   else if (m_MapperID > 1)  //==2 for 3D and ==5 for stencil
   {
     Point2D p(me->GetDisplayPosition());
 
     GetDisplayGeometry()->ULDisplayToDisplay(p, p);
     me->SetDisplayPosition(p);
     mitk::EventMapper::MapEvent(me, m_RenderingManager->GetGlobalInteraction());
   }
 }
 
 void mitk::BaseRenderer::MouseReleaseEvent(mitk::MouseEvent *me)
 {
   //if (m_CameraController)
   //{
   //  if(me->GetButtonState()!=512) // provisorisch: Ctrl nicht durchlassen. Bald wird aus m_CameraController eine StateMachine
   //    m_CameraController->MouseReleaseEvent(me);
   //}
 
   if (m_MapperID == 1)
   {
     Point2D p(me->GetDisplayPosition());
     Point2D p_mm;
     Point3D position;
     GetDisplayGeometry()->ULDisplayToDisplay(p, p);
     GetDisplayGeometry()->DisplayToWorld(p, p_mm);
     GetDisplayGeometry()->Map(p_mm, position);
     mitk::PositionEvent event(this, me->GetType(), me->GetButton(), me->GetButtonState(), mitk::Key_unknown, p, position);
     mitk::EventMapper::MapEvent(&event, m_RenderingManager->GetGlobalInteraction());
   }
   else if (m_MapperID == 2)
   {
     Point2D p(me->GetDisplayPosition());
     GetDisplayGeometry()->ULDisplayToDisplay(p, p);
     me->SetDisplayPosition(p);
     mitk::EventMapper::MapEvent(me, m_RenderingManager->GetGlobalInteraction());
   }
 }
 
 void mitk::BaseRenderer::MouseMoveEvent(mitk::MouseEvent *me)
 {
   //if (m_CameraController)
   //{
   //  if((me->GetButtonState()<=512) || (me->GetButtonState()>=516))// provisorisch: Ctrl nicht durchlassen. Bald wird aus m_CameraController eine StateMachine
   //    m_CameraController->MouseMoveEvent(me);
   //}
   if (m_MapperID == 1)
   {
     Point2D p(me->GetDisplayPosition());
     Point2D p_mm;
     Point3D position;
     GetDisplayGeometry()->ULDisplayToDisplay(p, p);
     GetDisplayGeometry()->DisplayToWorld(p, p_mm);
     GetDisplayGeometry()->Map(p_mm, position);
     mitk::PositionEvent event(this, me->GetType(), me->GetButton(), me->GetButtonState(), mitk::Key_unknown, p, position);
     mitk::EventMapper::MapEvent(&event, m_RenderingManager->GetGlobalInteraction());
   }
   else if (m_MapperID == 2)
   {
     Point2D p(me->GetDisplayPosition());
     GetDisplayGeometry()->ULDisplayToDisplay(p, p);
     me->SetDisplayPosition(p);
     mitk::EventMapper::MapEvent(me, m_RenderingManager->GetGlobalInteraction());
   }
 }
 
 void mitk::BaseRenderer::PickWorldPoint(const mitk::Point2D& displayPoint, mitk::Point3D& worldPoint) const
 {
   mitk::Point2D worldPoint2D;
   GetDisplayGeometry()->DisplayToWorld(displayPoint, worldPoint2D);
   GetDisplayGeometry()->Map(worldPoint2D, worldPoint);
 }
 
 void mitk::BaseRenderer::WheelEvent(mitk::WheelEvent * we)
 {
   if (m_MapperID == 1)
   {
     Point2D p(we->GetDisplayPosition());
     Point2D p_mm;
     Point3D position;
     GetDisplayGeometry()->ULDisplayToDisplay(p, p);
     GetDisplayGeometry()->DisplayToWorld(p, p_mm);
     GetDisplayGeometry()->Map(p_mm, position);
     mitk::PositionEvent event(this, we->GetType(), we->GetButton(), we->GetButtonState(), mitk::Key_unknown, p, position);
     mitk::EventMapper::MapEvent(we, m_RenderingManager->GetGlobalInteraction());
     mitk::EventMapper::MapEvent(&event, m_RenderingManager->GetGlobalInteraction());
   }
   else if (m_MapperID == 2)
   {
     Point2D p(we->GetDisplayPosition());
     GetDisplayGeometry()->ULDisplayToDisplay(p, p);
     we->SetDisplayPosition(p);
     mitk::EventMapper::MapEvent(we, m_RenderingManager->GetGlobalInteraction());
   }
 }
 
 void mitk::BaseRenderer::KeyPressEvent(mitk::KeyEvent *ke)
 {
   if (m_MapperID == 1)
   {
     Point2D p(ke->GetDisplayPosition());
     Point2D p_mm;
     Point3D position;
     GetDisplayGeometry()->ULDisplayToDisplay(p, p);
     GetDisplayGeometry()->DisplayToWorld(p, p_mm);
     GetDisplayGeometry()->Map(p_mm, position);
     mitk::KeyEvent event(this, ke->GetType(), ke->GetButton(), ke->GetButtonState(), ke->GetKey(), ke->GetText(), p);
     mitk::EventMapper::MapEvent(&event, m_RenderingManager->GetGlobalInteraction());
   }
   else if (m_MapperID == 2)
   {
     Point2D p(ke->GetDisplayPosition());
     GetDisplayGeometry()->ULDisplayToDisplay(p, p);
     ke->SetDisplayPosition(p);
     mitk::EventMapper::MapEvent(ke, m_RenderingManager->GetGlobalInteraction());
   }
 }
 
 void mitk::BaseRenderer::DrawOverlayMouse(mitk::Point2D& itkNotUsed(p2d))
 {
   MITK_INFO<<"BaseRenderer::DrawOverlayMouse()- should be inconcret implementation OpenGLRenderer."<<std::endl;
 }
 
 void mitk::BaseRenderer::RequestUpdate()
 {
   m_RenderingManager->RequestUpdate(this->m_RenderWindow);
 }
 
 void mitk::BaseRenderer::ForceImmediateUpdate()
 {
   m_RenderingManager->ForceImmediateUpdate(this->m_RenderWindow);
 }
 
 unsigned int mitk::BaseRenderer::GetNumberOfVisibleLODEnabledMappers() const
 {
   return m_NumberOfVisibleLODEnabledMappers;
 }
 
 mitk::RenderingManager* mitk::BaseRenderer::GetRenderingManager() const
 {
   return m_RenderingManager.GetPointer();
 }
 
 /*!
  Sets the new Navigation controller
  */
 void mitk::BaseRenderer::SetSliceNavigationController(mitk::SliceNavigationController *SlicenavigationController)
 {
   if (SlicenavigationController == NULL)
     return;
 
   //disconnect old from globalinteraction
   m_RenderingManager->GetGlobalInteraction()->RemoveListener(SlicenavigationController);
 
   //copy worldgeometry
   SlicenavigationController->SetInputWorldTimeGeometry(SlicenavigationController->GetCreatedWorldGeometry());
   SlicenavigationController->Update();
 
   //set new
   m_SliceNavigationController = SlicenavigationController;
   m_SliceNavigationController->SetRenderer(this);
 
   if (m_SliceNavigationController.IsNotNull())
   {
     m_SliceNavigationController->ConnectGeometrySliceEvent(this);
     m_SliceNavigationController->ConnectGeometryUpdateEvent(this);
     m_SliceNavigationController->ConnectGeometryTimeEvent(this, false);
   }
 }
 
 /*!
  Sets the new camera controller and deletes the vtkRenderWindowInteractor in case of the VTKInteractorCameraController
  */
 void mitk::BaseRenderer::SetCameraController(CameraController* cameraController)
 {
   mitk::VtkInteractorCameraController::Pointer vtkInteractorCameraController =
       dynamic_cast<mitk::VtkInteractorCameraController*>(cameraController);
   if (vtkInteractorCameraController.IsNotNull())
     MITK_INFO<<"!!!WARNING!!!: RenderWindow interaction events are no longer handled via CameraController (See Bug #954)."<<std::endl;
   m_CameraController->SetRenderer(NULL);
   m_CameraController = NULL;
   m_CameraController = cameraController;
   m_CameraController->SetRenderer(this);
 }
 
 void mitk::BaseRenderer::PrintSelf(std::ostream& os, itk::Indent indent) const
 {
   os << indent << " MapperID: " << m_MapperID << std::endl;
   os << indent << " Slice: " << m_Slice << std::endl;
   os << indent << " TimeStep: " << m_TimeStep << std::endl;
 
   os << indent << " WorldGeometry: ";
   if (m_WorldGeometry.IsNull())
     os << "NULL" << std::endl;
   else
     m_WorldGeometry->Print(os, indent);
 
   os << indent << " CurrentWorldGeometry2D: ";
   if (m_CurrentWorldGeometry2D.IsNull())
     os << "NULL" << std::endl;
   else
     m_CurrentWorldGeometry2D->Print(os, indent);
 
   os << indent << " CurrentWorldGeometry2DUpdateTime: " << m_CurrentWorldGeometry2DUpdateTime << std::endl;
   os << indent << " CurrentWorldGeometry2DTransformTime: " << m_CurrentWorldGeometry2DTransformTime << std::endl;
 
   os << indent << " DisplayGeometry: ";
   if (m_DisplayGeometry.IsNull())
     os << "NULL" << std::endl;
   else
     m_DisplayGeometry->Print(os, indent);
 
   os << indent << " DisplayGeometryTransformTime: " << m_DisplayGeometryTransformTime << std::endl;
   Superclass::PrintSelf(os, indent);
 }
 
 void mitk::BaseRenderer::SetDepthPeelingEnabled(bool enabled)
 {
   m_DepthPeelingEnabled = enabled;
   m_VtkRenderer->SetUseDepthPeeling(enabled);
 }
 
 void mitk::BaseRenderer::SetMaxNumberOfPeels(int maxNumber)
 {
   m_MaxNumberOfPeels = maxNumber;
   m_VtkRenderer->SetMaximumNumberOfPeels(maxNumber);
-}
\ No newline at end of file
+}
diff --git a/Core/Code/Rendering/mitkVtkOverlay.cpp b/Core/Code/Rendering/mitkVtkOverlay.cpp
index ae22cd6506..4dbf8d641f 100644
--- a/Core/Code/Rendering/mitkVtkOverlay.cpp
+++ b/Core/Code/Rendering/mitkVtkOverlay.cpp
@@ -1,63 +1,67 @@
 /*===================================================================
 
 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 "mitkVtkOverlay.h"
 #include <vtkProperty.h>
 #include <vtkProp.h>
 
 mitk::VtkOverlay::VtkOverlay()
 {
 }
 
 
 mitk::VtkOverlay::~VtkOverlay()
 {
 }
 
 void mitk::VtkOverlay::Update(mitk::BaseRenderer *renderer)
 {
   vtkSmartPointer<vtkProp> prop = GetVtkProp(renderer);
   if(!IsVisible(renderer))
   {
     prop->SetVisibility(false);
     return;
   }
   else
   {
 
     prop->SetVisibility(true);
     UpdateVtkOverlay(renderer);
   }
 }
 
 void mitk::VtkOverlay::AddToBaseRenderer(mitk::BaseRenderer *renderer)
 {
+  if(!renderer || !renderer->GetVtkRenderer())
+    return;
   Update(renderer);
   vtkSmartPointer<vtkProp> vtkProp = GetVtkProp(renderer);
-  if(!renderer->GetVtkRenderer()->HasViewProp(vtkProp))
+  if(renderer && renderer->GetVtkRenderer() && !renderer->GetVtkRenderer()->HasViewProp(vtkProp))
   {
     renderer->GetVtkRenderer()->AddViewProp(vtkProp);
   }
 }
 
 void mitk::VtkOverlay::RemoveFromBaseRenderer(mitk::BaseRenderer *renderer)
 {
+  if(!renderer || !renderer->GetVtkRenderer())
+     return;
   vtkSmartPointer<vtkProp> vtkProp = GetVtkProp(renderer);
   if(renderer->GetVtkRenderer()->HasViewProp(vtkProp))
   {
     renderer->GetVtkRenderer()->RemoveViewProp(vtkProp);
   }
 }