diff --git a/Modules/IGT/IGTToolManagement/mitkNavigationToolStorageDeserializer.cpp b/Modules/IGT/IGTToolManagement/mitkNavigationToolStorageDeserializer.cpp
index b9ef7570fa..1106c4573b 100644
--- a/Modules/IGT/IGTToolManagement/mitkNavigationToolStorageDeserializer.cpp
+++ b/Modules/IGT/IGTToolManagement/mitkNavigationToolStorageDeserializer.cpp
@@ -1,86 +1,96 @@
 /*=========================================================================
 
 Program:   Medical Imaging & Interaction Toolkit
 Language:  C++
 Date:      $Date: 2009-05-28 17:19:30 +0200 (Do, 28 Mai 2009) $
 Version:   $Revision $
 
 Copyright (c) German Cancer Research Center, Division of Medical and
 Biological Informatics. All rights reserved.
 See MITKCopyright.txt or http://www.mitk.org/copyright.html for details.
 
 This software is distributed WITHOUT ANY WARRANTY; without even
 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 PURPOSE.  See the above copyright notices for more information.
 
 =========================================================================*/
 
 //Poco headers
 #include "Poco/Zip/Decompress.h"
 #include "Poco/Path.h"
 #include "Poco/File.h"
 
 #include "mitkNavigationToolStorageDeserializer.h"
 #include <mitkSceneIO.h>
 #include <mitkStandardFileLocations.h>
 #include "mitkNavigationToolReader.h"
 
+//POCO
+#include <Poco/Exception.h>
+
 mitk::NavigationToolStorageDeserializer::NavigationToolStorageDeserializer(mitk::DataStorage::Pointer dataStorage)
   {
   m_DataStorage = dataStorage;
   //create temp directory for this reader
   m_tempDirectory = mitk::StandardFileLocations::GetInstance()->GetOptionDirectory() + Poco::Path::separator() + "tempNavigationToolDeserializer";
   Poco::File myFile(m_tempDirectory);  
   myFile.createDirectory();
   }
 
 mitk::NavigationToolStorageDeserializer::~NavigationToolStorageDeserializer()
   {
   //remove temp directory
   Poco::File myFile(m_tempDirectory);
-  if (myFile.exists()) myFile.remove();
+  try
+    {
+    if (myFile.exists()) myFile.remove();
+    }
+  catch(...)
+    {
+    MITK_ERROR << "Can't remove temp directory " << m_tempDirectory << "!";
+    }
   }
 
 mitk::NavigationToolStorage::Pointer mitk::NavigationToolStorageDeserializer::Deserialize(std::string filename)
   {
   //decomress zip file into temporary directory
   decomressFiles(filename,m_tempDirectory);
   
   //now read all files and convert them to navigation tools
   mitk::NavigationToolStorage::Pointer returnValue = mitk::NavigationToolStorage::New(m_DataStorage);
   bool cont = true;
   for (int i=0; cont==true; i++)
     {
     std::string fileName = m_tempDirectory + Poco::Path::separator() + "NavigationTool" + convertIntToString(i) + ".tool";
     mitk::NavigationToolReader::Pointer myReader = mitk::NavigationToolReader::New();
     mitk::NavigationTool::Pointer readTool = myReader->DoRead(fileName);
     if (readTool.IsNull()) cont = false;
     else returnValue->AddTool(readTool);
     //delete file
     std::remove(fileName.c_str());
     }
   return returnValue;
   }
 
 std::string mitk::NavigationToolStorageDeserializer::convertIntToString(int i)
   {
   std::string s;
   std::stringstream out;
   out << i;
   s = out.str();
   return s;
   }
 
 bool mitk::NavigationToolStorageDeserializer::decomressFiles(std::string filename,std::string path)
   {
   std::ifstream file( filename.c_str(), std::ios::binary );
   if (!file.good())
     {
     m_ErrorMessage = "Cannot open '" + filename + "' for reading";
     return false;
     }
   Poco::Zip::Decompress unzipper( file, Poco::Path( path ) );
   unzipper.decompressAllFiles();
   file.close();
   return true;
-  }
+  }
\ No newline at end of file
diff --git a/Modules/IGT/IGTToolManagement/mitkNavigationToolStorageSerializer.cpp b/Modules/IGT/IGTToolManagement/mitkNavigationToolStorageSerializer.cpp
index 9ba5328b4c..7eed30687d 100644
--- a/Modules/IGT/IGTToolManagement/mitkNavigationToolStorageSerializer.cpp
+++ b/Modules/IGT/IGTToolManagement/mitkNavigationToolStorageSerializer.cpp
@@ -1,89 +1,96 @@
 /*=========================================================================
 
 Program:   Medical Imaging & Interaction Toolkit
 Language:  C++
 Date:      $Date: 2009-05-28 17:19:30 +0200 (Do, 28 Mai 2009) $
 Version:   $Revision $
 
 Copyright (c) German Cancer Research Center, Division of Medical and
 Biological Informatics. All rights reserved.
 See MITKCopyright.txt or http://www.mitk.org/copyright.html for details.
 
 This software is distributed WITHOUT ANY WARRANTY; without even
 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 PURPOSE.  See the above copyright notices for more information.
 
 =========================================================================*/
 
 //Poco headers
 #include "Poco/Zip/Compress.h"
 #include "Poco/Path.h"
 #include "Poco/File.h"
 
 #include "mitkNavigationToolStorageSerializer.h"
 #include "mitkNavigationToolWriter.h"
 #include <mitkStandaloneDataStorage.h>
 #include <mitkSceneIO.h>
 #include <mitkStandardFileLocations.h>
 
 #include <sstream>
 
 mitk::NavigationToolStorageSerializer::NavigationToolStorageSerializer()
   {
   //create temp directory
   m_tempDirectory = mitk::StandardFileLocations::GetInstance()->GetOptionDirectory() + Poco::Path::separator() + "tempNavigationToolSerializer";
   Poco::File myFile(m_tempDirectory);  
   myFile.createDirectory();
   }
 
 mitk::NavigationToolStorageSerializer::~NavigationToolStorageSerializer()
   {
   //remove temp directory
   Poco::File myFile(m_tempDirectory);
-  if (myFile.exists()) myFile.remove();
+  try
+    {
+    if (myFile.exists()) myFile.remove();
+    }
+  catch(...)
+    {
+    MITK_ERROR << "Can't remove temp directory " << m_tempDirectory << "!";
+    }
   }
 
 bool mitk::NavigationToolStorageSerializer::Serialize(std::string filename, mitk::NavigationToolStorage::Pointer storage)
   {
   //save every tool to temp directory
   mitk::NavigationToolWriter::Pointer myToolWriter = mitk::NavigationToolWriter::New();
   for(int i=0; i<storage->GetToolCount();i++)
     {   
     std::string fileName = m_tempDirectory + Poco::Path::separator() + "NavigationTool" + convertIntToString(i) + ".tool";
     if (!myToolWriter->DoWrite(fileName,storage->GetTool(i))) return false;
     }
 
   //add all files to zip archive
   std::ofstream file( filename.c_str(), std::ios::binary | std::ios::out);
   if (!file.good())
     {
     m_ErrorMessage = "Could not open a zip file for writing: '" + filename + "'";
     for (int i=0; i<storage->GetToolCount();i++)
       {
       std::string fileName = m_tempDirectory + Poco::Path::separator() + "NavigationTool" + convertIntToString(i) + ".tool";
       std::remove(fileName.c_str());
       }
     return false;
     }
   Poco::Zip::Compress zipper( file, true );
   for (int i=0; i<storage->GetToolCount();i++)
       {
       std::string fileName = m_tempDirectory + Poco::Path::separator() + "NavigationTool" + convertIntToString(i) + ".tool";
       zipper.addFile(fileName,myToolWriter->GetFileWithoutPath(fileName));
       //delete file:
       std::remove(fileName.c_str());
       }
   zipper.close();
   file.close();
   
   return true;
   }
 
 std::string mitk::NavigationToolStorageSerializer::convertIntToString(int i)
   {
   std::string s;
   std::stringstream out;
   out << i;
   s = out.str();
   return s;
   }