diff --git a/Modules/MitkExt/Controllers/mitkToolManager.cpp b/Modules/MitkExt/Controllers/mitkToolManager.cpp
index a1304cba73..b80265e03b 100644
--- a/Modules/MitkExt/Controllers/mitkToolManager.cpp
+++ b/Modules/MitkExt/Controllers/mitkToolManager.cpp
@@ -1,513 +1,522 @@
 /*===================================================================
 
 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 "mitkToolManager.h"
 #include "mitkGlobalInteraction.h"
 #include "mitkCoreObjectFactory.h"
 
 #include <itkObjectFactoryBase.h>
 #include <itkCommand.h>
 
 #include <list>
 
 mitk::ToolManager::ToolManager(DataStorage* storage)
 :m_ActiveTool(NULL),
  m_ActiveToolID(-1),
  m_RegisteredClients(0),
  m_DataStorage(storage)
 {
   CoreObjectFactory::GetInstance(); // to make sure a CoreObjectFactory was instantiated (and in turn, possible tools are registered) - bug 1029
 
   // get a list of all known mitk::Tools
   std::list<itk::LightObject::Pointer> thingsThatClaimToBeATool = itk::ObjectFactoryBase::CreateAllInstance("mitkTool");
 
   // remember these tools
   for ( std::list<itk::LightObject::Pointer>::iterator iter = thingsThatClaimToBeATool.begin();
     iter != thingsThatClaimToBeATool.end();
     ++iter )
   {
     if ( Tool* tool = dynamic_cast<Tool*>( iter->GetPointer() ) )
     {
       tool->SetToolManager(this); // important to call right after instantiation
       tool->ErrorMessage += MessageDelegate1<mitk::ToolManager, std::string>( this, &ToolManager::OnToolErrorMessage );
       tool->GeneralMessage += MessageDelegate1<mitk::ToolManager, std::string>( this, &ToolManager::OnGeneralToolMessage );
       m_Tools.push_back( tool );
     }
   }
 
   //ActivateTool(0); // first one is default
 }
 
 mitk::ToolManager::~ToolManager()
 {
   for (DataVectorType::iterator dataIter = m_WorkingData.begin(); dataIter != m_WorkingData.end(); ++dataIter)
     (*dataIter)->RemoveObserver(m_WorkingDataObserverTags[(*dataIter)]);
 
+  if(this->GetDataStorage() != NULL)
+    this->GetDataStorage()->RemoveNodeEvent.RemoveListener( mitk::MessageDelegate1<ToolManager, const mitk::DataNode*>
+        ( this, &ToolManager::OnNodeRemoved ));
+
   if (m_ActiveTool)
   {
     m_ActiveTool->Deactivated();
     GlobalInteraction::GetInstance()->RemoveListener( m_ActiveTool );
 
     m_ActiveTool = NULL;
     m_ActiveToolID = -1; // no tool active
 
     ActiveToolChanged.Send();
+
   }
   for ( NodeTagMapType::iterator observerTagMapIter = m_ReferenceDataObserverTags.begin(); observerTagMapIter != m_ReferenceDataObserverTags.end(); ++observerTagMapIter )
   {
     observerTagMapIter->first->RemoveObserver( observerTagMapIter->second );
   }
 }
 
 void mitk::ToolManager::OnToolErrorMessage(std::string s)
 {
   this->ToolErrorMessage(s);
 }
 
 void mitk::ToolManager::OnGeneralToolMessage(std::string s)
 {
   this->GeneralToolMessage(s);
 }
 
 
 const mitk::ToolManager::ToolVectorTypeConst mitk::ToolManager::GetTools()
 {
   ToolVectorTypeConst resultList;
 
   for ( ToolVectorType::iterator iter = m_Tools.begin();
     iter != m_Tools.end();
     ++iter )
   {
     resultList.push_back( iter->GetPointer() );
   }
 
   return resultList;
 }
 
 mitk::Tool* mitk::ToolManager::GetToolById(int id)
 {
   try
   {
     return m_Tools.at(id);
   }
   catch(std::exception&)
   {
     return NULL;
   }
 }
 
 bool mitk::ToolManager::ActivateTool(int id)
 {
 
   if(this->GetDataStorage())
     {
       this->GetDataStorage()->RemoveNodeEvent.AddListener( mitk::MessageDelegate1<ToolManager, const mitk::DataNode*>
         ( this, &ToolManager::OnNodeRemoved ) );
     }
 
   //MITK_INFO << "ToolManager::ActivateTool("<<id<<")"<<std::endl;
   //if( GetToolById(id) == NULL ) return false; // NO, invalid IDs are actually used here. Parameter -1 or anything that does not exists will deactivate all tools!
 
   if ( GetToolById( id ) == m_ActiveTool ) return true; // no change needed
 
   static int nextTool = -1;
   nextTool = id;
   //MITK_INFO << "ToolManager::ActivateTool("<<id<<"): nextTool = "<<nextTool<<std::endl;
 
   static bool inActivateTool = false;
   if (inActivateTool)
   {
     //MITK_INFO << "ToolManager::ActivateTool("<<id<<"): already inside ActivateTool somehow, returning now "<<std::endl;
     return true;
   }
   inActivateTool = true;
 
   while ( nextTool != m_ActiveToolID )
   {
     //MITK_INFO <<"ToolManager::ActivateTool: nextTool = " << nextTool << " (active tool = " << m_ActiveToolID<<")"<<std::endl;
     if (m_ActiveTool)
     {
       m_ActiveTool->Deactivated();
       GlobalInteraction::GetInstance()->RemoveListener( m_ActiveTool );
     }
 
     m_ActiveTool = GetToolById( nextTool );
     m_ActiveToolID = m_ActiveTool ? nextTool : -1; // current ID if tool is valid, otherwise -1
 
     ActiveToolChanged.Send();
 
     if (m_ActiveTool)
     {
       if (m_RegisteredClients > 0)
       {
         m_ActiveTool->Activated();
         GlobalInteraction::GetInstance()->AddListener( m_ActiveTool );
       }
     }
   }
 
   inActivateTool = false;
   return (m_ActiveTool != NULL);
 }
 
 void mitk::ToolManager::SetReferenceData(DataVectorType data)
 {
   if (data != m_ReferenceData)
   {
     // remove observers from old nodes
     for ( DataVectorType::iterator dataIter = m_ReferenceData.begin(); dataIter != m_ReferenceData.end(); ++dataIter )
     {
       NodeTagMapType::iterator searchIter = m_ReferenceDataObserverTags.find( *dataIter );
       if ( searchIter != m_ReferenceDataObserverTags.end() )
       {
         //MITK_INFO << "Stopping observation of " << (void*)(*dataIter) << std::endl;
         (*dataIter)->RemoveObserver( searchIter->second );
       }
     }
 
     m_ReferenceData = data;
     // TODO tell active tool?
 
     // attach new observers
     m_ReferenceDataObserverTags.clear();
     for ( DataVectorType::iterator dataIter = m_ReferenceData.begin(); dataIter != m_ReferenceData.end(); ++dataIter )
     {
       
 
       //MITK_INFO << "Observing " << (void*)(*dataIter) << std::endl;
       itk::MemberCommand<ToolManager>::Pointer command = itk::MemberCommand<ToolManager>::New();
       command->SetCallbackFunction( this, &ToolManager::OnOneOfTheReferenceDataDeleted );
       command->SetCallbackFunction( this, &ToolManager::OnOneOfTheReferenceDataDeletedConst );
       m_ReferenceDataObserverTags.insert( std::pair<DataNode*, unsigned long>( (*dataIter), (*dataIter)->AddObserver( itk::DeleteEvent(), command ) ) );
     }
 
     ReferenceDataChanged.Send();
   }
 }
 
 void mitk::ToolManager::OnOneOfTheReferenceDataDeletedConst(const itk::Object* caller, const itk::EventObject& e)
 {
   OnOneOfTheReferenceDataDeleted( const_cast<itk::Object*>(caller), e );
 }
 
 void mitk::ToolManager::OnOneOfTheReferenceDataDeleted(itk::Object* caller, const itk::EventObject& itkNotUsed(e))
 {
   //MITK_INFO << "Deleted: " << (void*)caller << " Removing from reference data list." << std::endl;
   DataVectorType v;
 
   for (DataVectorType::iterator dataIter = m_ReferenceData.begin(); dataIter != m_ReferenceData.end(); ++dataIter )
   {
     //MITK_INFO << " In list: " << (void*)(*dataIter);
     if ( (void*)(*dataIter) != (void*)caller )
     {
       v.push_back( *dataIter );
       //MITK_INFO << " kept" << std::endl;
     }
     else
     {
       //MITK_INFO << " removed" << std::endl;
       m_ReferenceDataObserverTags.erase( *dataIter ); // no tag to remove anymore
     }
   }
   this->SetReferenceData( v );
 }
 
 void mitk::ToolManager::SetReferenceData(DataNode* data)
 {
   //MITK_INFO << "ToolManager::SetReferenceData(" << (void*)data << ")" << std::endl;
   DataVectorType v;
   if (data)
   {
     v.push_back(data);
   }
   SetReferenceData(v);
 }
 
 void mitk::ToolManager::SetWorkingData(DataVectorType data)
 {
   if ( data != m_WorkingData )
   {
     // remove observers from old nodes
     for ( DataVectorType::iterator dataIter = m_WorkingData.begin(); dataIter != m_WorkingData.end(); ++dataIter )
     {
       NodeTagMapType::iterator searchIter = m_WorkingDataObserverTags.find( *dataIter );
       if ( searchIter != m_WorkingDataObserverTags.end() )
       {
         //MITK_INFO << "Stopping observation of " << (void*)(*dataIter) << std::endl;
         (*dataIter)->RemoveObserver( searchIter->second );
       }
     }
 
     m_WorkingData = data;
     // TODO tell active tool?
 
     // attach new observers
     m_WorkingDataObserverTags.clear();
     for ( DataVectorType::iterator dataIter = m_WorkingData.begin(); dataIter != m_WorkingData.end(); ++dataIter )
     {
       //MITK_INFO << "Observing " << (void*)(*dataIter) << std::endl;
       itk::MemberCommand<ToolManager>::Pointer command = itk::MemberCommand<ToolManager>::New();
       command->SetCallbackFunction( this, &ToolManager::OnOneOfTheWorkingDataDeleted );
       command->SetCallbackFunction( this, &ToolManager::OnOneOfTheWorkingDataDeletedConst );
       m_WorkingDataObserverTags.insert( std::pair<DataNode*, unsigned long>( (*dataIter), (*dataIter)->AddObserver( itk::DeleteEvent(), command ) ) );
     }
 
     WorkingDataChanged.Send();
   }
 }
 
 void mitk::ToolManager::OnOneOfTheWorkingDataDeletedConst(const itk::Object* caller, const itk::EventObject& e)
 {
   OnOneOfTheWorkingDataDeleted( const_cast<itk::Object*>(caller), e );
 }
 
 void mitk::ToolManager::OnOneOfTheWorkingDataDeleted(itk::Object* caller, const itk::EventObject& itkNotUsed(e))
 {
   //MITK_INFO << "Deleted: " << (void*)caller << " Removing from reference data list." << std::endl;
   DataVectorType v;
 
   for (DataVectorType::iterator dataIter = m_WorkingData.begin(); dataIter != m_WorkingData.end(); ++dataIter )
   {
     //MITK_INFO << " In list: " << (void*)(*dataIter);
     if ( (void*)(*dataIter) != (void*)caller )
     {
       v.push_back( *dataIter );
       //MITK_INFO << " kept" << std::endl;
     }
     else
     {
       //MITK_INFO << " removed" << std::endl;
       m_WorkingDataObserverTags.erase( *dataIter ); // no tag to remove anymore
     }
   }
   this->SetWorkingData( v );
 }
 
 
 void mitk::ToolManager::SetWorkingData(DataNode* data)
 {
   DataVectorType v;
 
   if (data) // don't allow for NULL nodes
   {
     v.push_back(data);
   }
 
   SetWorkingData(v);
 }
 
 void mitk::ToolManager::SetRoiData(DataVectorType data)
 {
   if (data != m_RoiData)
   {
     // remove observers from old nodes
     for ( DataVectorType::iterator dataIter = m_RoiData.begin(); dataIter != m_RoiData.end(); ++dataIter )
     {
       NodeTagMapType::iterator searchIter = m_RoiDataObserverTags.find( *dataIter );
       if ( searchIter != m_RoiDataObserverTags.end() )
       {
         //MITK_INFO << "Stopping observation of " << (void*)(*dataIter) << std::endl;
         (*dataIter)->RemoveObserver( searchIter->second );
       }
     }
 
     m_RoiData = data;
     // TODO tell active tool?
 
     // attach new observers
     m_RoiDataObserverTags.clear();
     for ( DataVectorType::iterator dataIter = m_RoiData.begin(); dataIter != m_RoiData.end(); ++dataIter )
     {
       //MITK_INFO << "Observing " << (void*)(*dataIter) << std::endl;
       itk::MemberCommand<ToolManager>::Pointer command = itk::MemberCommand<ToolManager>::New();
       command->SetCallbackFunction( this, &ToolManager::OnOneOfTheRoiDataDeleted );
       command->SetCallbackFunction( this, &ToolManager::OnOneOfTheRoiDataDeletedConst );
       m_RoiDataObserverTags.insert( std::pair<DataNode*, unsigned long>( (*dataIter), (*dataIter)->AddObserver( itk::DeleteEvent(), command ) ) );
     }
     RoiDataChanged.Send();
   }
 }
 
 void mitk::ToolManager::SetRoiData(DataNode* data)
 {
   DataVectorType v;
 
   if(data)
   {
     v.push_back(data);
   }
   this->SetRoiData(v);
 }
 
 void mitk::ToolManager::OnOneOfTheRoiDataDeletedConst(const itk::Object* caller, const itk::EventObject& e)
 {
   OnOneOfTheRoiDataDeleted( const_cast<itk::Object*>(caller), e );
 }
 
 void mitk::ToolManager::OnOneOfTheRoiDataDeleted(itk::Object* caller, const itk::EventObject& itkNotUsed(e))
 {
   //MITK_INFO << "Deleted: " << (void*)caller << " Removing from roi data list." << std::endl;
   DataVectorType v;
 
   for (DataVectorType::iterator dataIter = m_RoiData.begin(); dataIter != m_RoiData.end(); ++dataIter )
   {
     //MITK_INFO << " In list: " << (void*)(*dataIter);
     if ( (void*)(*dataIter) != (void*)caller )
     {
       v.push_back( *dataIter );
       //MITK_INFO << " kept" << std::endl;
     }
     else
     {
       //MITK_INFO << " removed" << std::endl;
       m_RoiDataObserverTags.erase( *dataIter ); // no tag to remove anymore
     }
   }
   this->SetRoiData( v );
 }
 
 mitk::ToolManager::DataVectorType mitk::ToolManager::GetReferenceData()
 {
   return m_ReferenceData;
 }
 
 mitk::DataNode* mitk::ToolManager::GetReferenceData(int idx)
 {
   try
   {
     return m_ReferenceData.at(idx);
   }
   catch(std::exception&)
   {
     return NULL;
   }
 }
 
 mitk::ToolManager::DataVectorType mitk::ToolManager::GetWorkingData()
 {
   return m_WorkingData;
 }
 
 mitk::ToolManager::DataVectorType mitk::ToolManager::GetRoiData()
 {
   return m_RoiData;
 }
 
 mitk::DataNode* mitk::ToolManager::GetRoiData(int idx)
 {
   try
   {
     return m_RoiData.at(idx);
   }
   catch(std::exception&)
   {
     return NULL;
   }
 }
 
 mitk::DataStorage* mitk::ToolManager::GetDataStorage()
 {
   if ( m_DataStorage.IsNotNull() )
   {
     return m_DataStorage;
   }
   else
   {
     return NULL;
   }
 }
 
 void mitk::ToolManager::SetDataStorage(DataStorage& storage)
 {
   m_DataStorage = &storage;
 }
 
 
 
 mitk::DataNode* mitk::ToolManager::GetWorkingData(int idx)
 {
   try
   {
     return m_WorkingData.at(idx);
   }
   catch(std::exception&)
   {
     return NULL;
   }
 }
 
 int mitk::ToolManager::GetActiveToolID()
 {
   return m_ActiveToolID;
 }
 
 mitk::Tool* mitk::ToolManager::GetActiveTool()
 {
   return m_ActiveTool;
 }
 
 void mitk::ToolManager::RegisterClient()
 {
   if ( m_RegisteredClients < 1 )
   {
     if ( m_ActiveTool )
     {
       m_ActiveTool->Activated();
       GlobalInteraction::GetInstance()->AddListener( m_ActiveTool );
     }
   }
   ++m_RegisteredClients;
 }
 
 void mitk::ToolManager::UnregisterClient()
 {
   if ( m_RegisteredClients < 1) return;
 
   --m_RegisteredClients;
   if ( m_RegisteredClients < 1 )
   {
     if ( m_ActiveTool )
     {
       m_ActiveTool->Deactivated();
       GlobalInteraction::GetInstance()->RemoveListener( m_ActiveTool );
     }
   }
 }
 
 int mitk::ToolManager::GetToolID( const Tool* tool )
 {
   int id(0);
   for ( ToolVectorType::iterator iter = m_Tools.begin();
     iter != m_Tools.end();
     ++iter, ++id )
   {
     if ( tool == iter->GetPointer() )
     {
       return id;
     }
   }
   return -1;
 }
 
 
 void mitk::ToolManager::OnNodeRemoved(const mitk::DataNode* node)
 {
-  //check all storage vectors
-  OnOneOfTheReferenceDataDeleted(const_cast<mitk::DataNode*>(node), itk::DeleteEvent());
-  OnOneOfTheRoiDataDeleted(const_cast<mitk::DataNode*>(node),itk::DeleteEvent());
-  OnOneOfTheWorkingDataDeleted(const_cast<mitk::DataNode*>(node),itk::DeleteEvent());
+  //check if the data of the node is typeof Image
+  /*if(dynamic_cast<mitk::Image*>(node->GetData()))
+  {*/
+    //check all storage vectors
+    OnOneOfTheReferenceDataDeleted(const_cast<mitk::DataNode*>(node), itk::DeleteEvent());
+    OnOneOfTheRoiDataDeleted(const_cast<mitk::DataNode*>(node),itk::DeleteEvent());
+    OnOneOfTheWorkingDataDeleted(const_cast<mitk::DataNode*>(node),itk::DeleteEvent());
+  //}
 }