diff --git a/Core/Code/Testing/mitkLogTest.cpp b/Core/Code/Testing/mitkLogTest.cpp
index 65fe886844..0a93be0cc2 100644
--- a/Core/Code/Testing/mitkLogTest.cpp
+++ b/Core/Code/Testing/mitkLogTest.cpp
@@ -1,286 +1,286 @@
 /*===================================================================
 
 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 "mitkCommon.h"
 #include "mitkTestingMacros.h"
 #include <mitkLog.h>
 #include <mitkVector.h>
 #include <itkMultiThreader.h>
 #include <itksys/SystemTools.hxx>
 #include <mitkStandardFileLocations.h>
 
 
 /** Documentation
   *
   * @brief Objects of this class can start an internal thread by calling the Start() method.
   *        The thread is then logging messages until the method Stop() is called. The class
   *        can be used to test if logging is thread-save by using multiple objects and let
   *        them log simuntanously.
   */
 class mitkTestLoggingThread : public itk::Object
 {
 public:
 
 mitkClassMacro(mitkTestLoggingThread,itk::Object);
 mitkNewMacro1Param(mitkTestLoggingThread,itk::MultiThreader::Pointer);
 
 int NumberOfMessages;
 
 protected:
 
 mitkTestLoggingThread(itk::MultiThreader::Pointer MultiThreader)
   {
   ThreadID = -1;
   NumberOfMessages = 0;
   m_MultiThreader = MultiThreader;
   }
 
 bool LoggingRunning;
 
 int ThreadID;
 
 itk::MultiThreader::Pointer m_MultiThreader;
 
 void LogMessages()
   {
 
   while(LoggingRunning)
     {
     MITK_INFO << "Test info stream in thread" << ThreadID << "\n even with newlines";
     MITK_WARN << "Test warning stream in thread " << ThreadID <<". "
               << "Even with a very long text, even without meaning or implied meaning or content, just a long sentence to see whether something has problems with long sentences or output in files or into windows or commandlines or whatever.";
     MITK_DEBUG << "Test debugging stream in thread " << ThreadID;
     MITK_ERROR << "Test error stream in thread " << ThreadID;
     MITK_FATAL << "Test fatal stream in thread " << ThreadID;
 
     NumberOfMessages += 5;
     }
   }
 
 
 static ITK_THREAD_RETURN_TYPE ThreadStartTracking(void* pInfoStruct)
   {
   /* extract this pointer from Thread Info structure */
   struct itk::MultiThreader::ThreadInfoStruct * pInfo = (struct itk::MultiThreader::ThreadInfoStruct*)pInfoStruct;
   if (pInfo == NULL)
   {
     return ITK_THREAD_RETURN_VALUE;
   }
   if (pInfo->UserData == NULL)
   {
     return ITK_THREAD_RETURN_VALUE;
   }
   mitkTestLoggingThread *thisthread = (mitkTestLoggingThread*)pInfo->UserData;
 
   if (thisthread != NULL)
     thisthread->LogMessages();
 
   return ITK_THREAD_RETURN_VALUE;
   }
 
 public:
 
 int Start()
   {
   LoggingRunning = true;
   this->ThreadID = m_MultiThreader->SpawnThread(this->ThreadStartTracking, this);
   return ThreadID;
   }
 
 void Stop()
   {
   LoggingRunning = false;
   }
 
 };
 
 /** Documentation
  *
  *  @brief This class holds static test methods to sturcture the test of the mitk logging mechanism.
  */
 class mitkLogTestClass
 {
 
 public:
 
 static void TestSimpleLog()
     {
     bool testSucceded = true;
     try
       {
       MITK_INFO << "Test info stream.";
       MITK_WARN << "Test warning stream.";
       MITK_DEBUG << "Test debugging stream."; //only activated if cmake variable is on!
                                               //so no worries if you see no output for this line
       MITK_ERROR << "Test error stream.";
       MITK_FATAL << "Test fatal stream.";
       }
     catch(mitk::Exception e)
       {
       testSucceded = false;
       }
     MITK_TEST_CONDITION_REQUIRED(testSucceded,"Test logging streams.");
     }
 
 static void TestObjectInfoLogging()
     {
     bool testSucceded = true;
     try
       {
       int i = 123;
       float f = .32234;
       double d = 123123;
       std::string testString = "testString";
       std::stringstream testStringStream;
       testStringStream << "test" << "String" << "Stream";
       mitk::Point3D testMitkPoint;
       testMitkPoint.Fill(2);
 
       MITK_INFO << i;
       MITK_INFO << f;
       MITK_INFO << d;
       MITK_INFO << testString;
-      MITK_INFO << testStringStream;
+      MITK_INFO << testStringStream.str();
       MITK_INFO << testMitkPoint;
       }
     catch(mitk::Exception e)
       {
       testSucceded = false;
       }
     MITK_TEST_CONDITION_REQUIRED(testSucceded,"Test logging of object information.");
     }
 
 
 
 
 static void TestThreadSaveLog(bool toFile)
     {
     bool testSucceded = true;
 
 
     try
       {
         if (toFile)
         {
           std::string filename = mitk::StandardFileLocations::GetInstance()->GetOptionDirectory() + "/testthreadlog.log";
           itksys::SystemTools::RemoveFile(filename.c_str()); // remove old file, we do not want to append to large files
           mitk::LoggingBackend::SetLogFile(filename.c_str());
         }
 
         unsigned int numberOfThreads = 20;
         unsigned int threadRuntimeInMilliseconds = 2000;
 
         std::vector<unsigned int> threadIDs;
         std::vector<mitkTestLoggingThread::Pointer> threads;
 
         itk::MultiThreader::Pointer multiThreader = itk::MultiThreader::New();
         for (unsigned int threadIdx = 0; threadIdx < numberOfThreads; ++threadIdx)
         {
           //initialize threads...
           mitkTestLoggingThread::Pointer newThread = mitkTestLoggingThread::New(multiThreader);
           threads.push_back(newThread);
           std::cout << "Created " << threadIdx << ". thread." << std::endl;
         }
 
         for (unsigned int threadIdx = 0; threadIdx < numberOfThreads; ++threadIdx)
         {
           //start them
           std::cout << "Start " << threadIdx << ". thread." << std::endl;
           threadIDs.push_back( threads[threadIdx]->Start() );
           std::cout << threadIdx << ". thread has ID " << threadIDs[threadIdx] << std::endl;
         }
 
         //wait for some time (milliseconds)
         itksys::SystemTools::Delay( threadRuntimeInMilliseconds );
 
 
         for (unsigned int threadIdx = 0; threadIdx < numberOfThreads; ++threadIdx)
         {
           //stop them
           std::cout << "Stop " << threadIdx << ". thread." << std::endl;
           threads[threadIdx]->Stop();
         }
 
         for (unsigned int threadIdx = 0; threadIdx < numberOfThreads; ++threadIdx)
         {
           //Wait for all threads to end
           multiThreader->TerminateThread(threadIDs[threadIdx]);
           std::cout << "Terminated " << threadIdx << ". thread (" << threads[threadIdx]->NumberOfMessages << " messages)." << std::endl;
         }
 
       }
     catch(std::exception e)
       {
         MITK_ERROR << "exception during 'TestThreadSaveLog': "<<e.what();
         testSucceded = false;
       }
     catch(...)
       {
         MITK_ERROR << "unknown exception during 'TestThreadSaveLog'";
         testSucceded = false;
       }
 
     //if no error occured until now, everything is ok
     MITK_TEST_CONDITION_REQUIRED(testSucceded,"Test logging in different threads.");
     }
 
 static void TestLoggingToFile()
     {
     std::string filename = mitk::StandardFileLocations::GetInstance()->GetOptionDirectory() + "/testlog.log";
     mitk::LoggingBackend::SetLogFile(filename.c_str());
     MITK_INFO << "Test logging to default filename: " << mitk::LoggingBackend::GetLogFile();
     MITK_TEST_CONDITION_REQUIRED(itksys::SystemTools::FileExists(filename.c_str()),"Testing if log file exists.");
     //TODO delete log file?
     }
 
 static void TestAddAndRemoveBackends()
     {
     mbilog::BackendCout myBackend = mbilog::BackendCout();
     mbilog::RegisterBackend(&myBackend);
     MITK_INFO << "Test logging";
     mbilog::UnregisterBackend(&myBackend);
 
     //if no error occured until now, everything is ok
     MITK_TEST_CONDITION_REQUIRED(true,"Test add/remove logging backend.");
     }
 
 static void  TestDefaultBackend()
     {
     //not possible now, because we cannot unregister the mitk logging backend in the moment. If such a method is added to mbilog utility one may add this test.
     }
 
 
 };
 
 int mitkLogTest(int /* argc */, char* /*argv*/[])
 {
   // always start with this!
   MITK_TEST_BEGIN("Log")
 
   MITK_TEST_OUTPUT(<<"TESTING ALL LOGGING OUTPUTS, ERROR MESSAGES ARE ALSO TESTED AND NOT MEANING AN ERROR OCCURED!")
 
   mitkLogTestClass::TestSimpleLog();
   mitkLogTestClass::TestObjectInfoLogging();
 
   mitkLogTestClass::TestLoggingToFile();
   mitkLogTestClass::TestAddAndRemoveBackends();
   mitkLogTestClass::TestThreadSaveLog( false ); // false = to console
   mitkLogTestClass::TestThreadSaveLog( true );  // true = to file
   // TODO actually test file somehow?
 
   // always end with this!
   MITK_TEST_END()
 }