diff --git a/Modules/IGTUI/Qmitk/QmitkNavigationDataSequentialPlayerControlWidget.ui b/Modules/IGTUI/Qmitk/QmitkNavigationDataSequentialPlayerControlWidget.ui
index 6c560e01fc..5b8a04d4bb 100644
--- a/Modules/IGTUI/Qmitk/QmitkNavigationDataSequentialPlayerControlWidget.ui
+++ b/Modules/IGTUI/Qmitk/QmitkNavigationDataSequentialPlayerControlWidget.ui
@@ -1,261 +1,266 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <ui version="4.0">
  <class>QmitkNavigationDataSequentialPlayerControlWidget</class>
  <widget class="QWidget" name="QmitkNavigationDataSequentialPlayerControlWidget">
   <property name="geometry">
    <rect>
     <x>0</x>
     <y>0</y>
     <width>407</width>
-    <height>95</height>
+    <height>106</height>
    </rect>
   </property>
   <property name="windowTitle">
    <string>Form</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>
     <layout class="QHBoxLayout" name="horizontalLayout">
      <item>
       <widget class="QLabel" name="sampleLabel">
        <property name="text">
         <string>Sample</string>
        </property>
       </widget>
      </item>
      <item>
       <widget class="QLCDNumber" name="sampleLCDNumber">
        <property name="sizePolicy">
         <sizepolicy hsizetype="Minimum" vsizetype="Minimum">
          <horstretch>0</horstretch>
          <verstretch>0</verstretch>
         </sizepolicy>
        </property>
        <property name="autoFillBackground">
         <bool>false</bool>
        </property>
        <property name="styleSheet">
         <string notr="true">background-color: rgb(60,60,60)</string>
        </property>
        <property name="numDigits">
         <number>10</number>
        </property>
        <property name="segmentStyle">
         <enum>QLCDNumber::Outline</enum>
        </property>
       </widget>
      </item>
      <item>
       <spacer name="horizontalSpacer_3">
        <property name="orientation">
         <enum>Qt::Horizontal</enum>
        </property>
        <property name="sizeHint" stdset="0">
         <size>
          <width>40</width>
          <height>20</height>
         </size>
        </property>
       </spacer>
      </item>
      <item>
       <widget class="QLabel" name="label_2">
        <property name="text">
         <string>Update Inverval</string>
        </property>
       </widget>
      </item>
      <item>
       <widget class="QSpinBox" name="updateIntervalSpinBox">
+       <property name="suffix">
+        <string> ms</string>
+       </property>
        <property name="minimum">
         <number>1</number>
        </property>
-      </widget>
-     </item>
-     <item>
-      <widget class="QLabel" name="label">
-       <property name="text">
-        <string>ms</string>
+       <property name="maximum">
+        <number>10000</number>
+       </property>
+       <property name="singleStep">
+        <number>20</number>
+       </property>
+       <property name="value">
+        <number>40</number>
        </property>
       </widget>
      </item>
     </layout>
    </item>
    <item>
     <widget class="QSlider" name="samplePositionHorizontalSlider">
      <property name="enabled">
       <bool>false</bool>
      </property>
      <property name="orientation">
       <enum>Qt::Horizontal</enum>
      </property>
     </widget>
    </item>
    <item>
     <layout class="QHBoxLayout" name="m_PlayerButtonsLayout">
      <item>
       <widget class="QPushButton" name="restartPushButton">
        <property name="sizePolicy">
         <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
          <horstretch>1</horstretch>
          <verstretch>0</verstretch>
         </sizepolicy>
        </property>
        <property name="toolTip">
         <string>Restart from beginning</string>
        </property>
        <property name="text">
         <string>Restart</string>
        </property>
        <property name="icon">
         <iconset resource="../resources/IGTUI.qrc">
          <normaloff>:/IGTUI/firstframe.png</normaloff>:/IGTUI/firstframe.png</iconset>
        </property>
       </widget>
      </item>
      <item>
       <widget class="QPushButton" name="playPushButton">
        <property name="sizePolicy">
         <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
          <horstretch>1</horstretch>
          <verstretch>0</verstretch>
         </sizepolicy>
        </property>
        <property name="toolTip">
         <string>Play at normal speed</string>
        </property>
        <property name="text">
         <string>Play</string>
        </property>
        <property name="icon">
         <iconset resource="../resources/IGTUI.qrc">
          <normaloff>:/IGTUI/play.png</normaloff>
          <activeon>:/IGTUI/pause.png</activeon>:/IGTUI/play.png</iconset>
        </property>
        <property name="iconSize">
         <size>
          <width>16</width>
          <height>16</height>
         </size>
        </property>
        <property name="checkable">
         <bool>true</bool>
        </property>
        <property name="checked">
         <bool>false</bool>
        </property>
       </widget>
      </item>
      <item>
       <widget class="QPushButton" name="stopPushButton">
        <property name="sizePolicy">
         <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
          <horstretch>1</horstretch>
          <verstretch>0</verstretch>
         </sizepolicy>
        </property>
        <property name="toolTip">
         <string>Stop playing</string>
        </property>
        <property name="text">
         <string>Stop</string>
        </property>
        <property name="icon">
         <iconset resource="../resources/IGTUI.qrc">
          <normaloff>:/IGTUI/stop.png</normaloff>:/IGTUI/stop.png</iconset>
        </property>
       </widget>
      </item>
     </layout>
    </item>
    <item>
     <spacer name="verticalSpacer">
      <property name="orientation">
       <enum>Qt::Vertical</enum>
      </property>
      <property name="sizeHint" stdset="0">
       <size>
        <width>20</width>
        <height>40</height>
       </size>
      </property>
     </spacer>
    </item>
   </layout>
  </widget>
  <resources>
   <include location="../resources/IGTUI.qrc"/>
  </resources>
  <connections>
   <connection>
    <sender>updateIntervalSpinBox</sender>
    <signal>valueChanged(int)</signal>
    <receiver>QmitkNavigationDataSequentialPlayerControlWidget</receiver>
    <slot>OnUpdateIntervalChanged(int)</slot>
    <hints>
     <hint type="sourcelabel">
      <x>349</x>
      <y>16</y>
     </hint>
     <hint type="destinationlabel">
      <x>203</x>
      <y>47</y>
     </hint>
    </hints>
   </connection>
   <connection>
    <sender>restartPushButton</sender>
    <signal>clicked()</signal>
    <receiver>QmitkNavigationDataSequentialPlayerControlWidget</receiver>
    <slot>OnRestart()</slot>
    <hints>
     <hint type="sourcelabel">
      <x>69</x>
      <y>73</y>
     </hint>
     <hint type="destinationlabel">
      <x>203</x>
      <y>47</y>
     </hint>
    </hints>
   </connection>
   <connection>
    <sender>playPushButton</sender>
    <signal>clicked()</signal>
    <receiver>QmitkNavigationDataSequentialPlayerControlWidget</receiver>
    <slot>OnPlayPause()</slot>
    <hints>
     <hint type="sourcelabel">
      <x>203</x>
      <y>73</y>
     </hint>
     <hint type="destinationlabel">
      <x>203</x>
      <y>47</y>
     </hint>
    </hints>
   </connection>
   <connection>
    <sender>stopPushButton</sender>
    <signal>clicked()</signal>
    <receiver>QmitkNavigationDataSequentialPlayerControlWidget</receiver>
    <slot>OnStop()</slot>
    <hints>
     <hint type="sourcelabel">
      <x>336</x>
      <y>73</y>
     </hint>
     <hint type="destinationlabel">
      <x>203</x>
      <y>47</y>
     </hint>
    </hints>
   </connection>
  </connections>
  <slots>
   <slot>OnUpdateIntervalChanged(int)</slot>
   <slot>OnRestart()</slot>
   <slot>OnPlayPause()</slot>
   <slot>OnStop()</slot>
  </slots>
 </ui>
diff --git a/Plugins/org.mitk.gui.qt.igttracking/src/internal/QmitkNavigationDataPlayerView.cpp b/Plugins/org.mitk.gui.qt.igttracking/src/internal/QmitkNavigationDataPlayerView.cpp
index cc59e58ec9..0a6a37193c 100644
--- a/Plugins/org.mitk.gui.qt.igttracking/src/internal/QmitkNavigationDataPlayerView.cpp
+++ b/Plugins/org.mitk.gui.qt.igttracking/src/internal/QmitkNavigationDataPlayerView.cpp
@@ -1,225 +1,230 @@
 /*===================================================================
 
 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.
 
 ===================================================================*/
 
 // Blueberry
 #include <berryISelectionService.h>
 #include <berryIWorkbenchWindow.h>
 
 // Qmitk
 #include "QmitkNavigationDataPlayerView.h"
 #include "QmitkStdMultiWidget.h"
 
 // QT
 #include <QFileDialog>
 
 //mitk
 #include <mitkNavigationDataSet.h>
 #include <mitkNavigationDataReaderXML.h>
 #include <mitkNavigationDataSequentialPlayer.h>
 #include <mitkNavigationDataPlayer.h>
 #include <mitkVirtualTrackingTool.h>
 
 // VTK
 #include <vtkSphereSource.h>
 
 const std::string QmitkNavigationDataPlayerView::VIEW_ID = "org.mitk.views.navigationdataplayer";
 
 QmitkNavigationDataPlayerView::QmitkNavigationDataPlayerView()
   : QmitkFunctionality()
   , m_Controls( 0 )
   , m_MultiWidget( NULL )
 {
 }
 
 QmitkNavigationDataPlayerView::~QmitkNavigationDataPlayerView()
 {
 }
 
 void QmitkNavigationDataPlayerView::CreateQtPartControl( QWidget *parent )
 {
   // build up qt view, unless already done
   if ( !m_Controls )
   {
     // create GUI widgets from the Qt Designer's .ui file
     m_Controls = new Ui::QmitkNavigationDataPlayerViewControls;
     m_Controls->setupUi( parent );
 
     this->CreateBundleWidgets( parent );
     this->CreateConnections();
 
     // make deselected Player invisible
     m_Controls->m_TimedWidget->setVisible(false);
   }
 }
 
 void QmitkNavigationDataPlayerView::CreateBundleWidgets(QWidget* parent)
 {
   //m_PlayerWidget = new QmitkIGTPlayerWidget( parent );   // this bundle's ND player widget
 }
 
 void QmitkNavigationDataPlayerView::CreateConnections()
 {
   connect( m_Controls->m_RdbSequential, SIGNAL(released()), this, SLOT(OnSelectPlayer()) );
   connect( m_Controls->m_RdbTimeBased, SIGNAL(released()), this, SLOT(OnSelectPlayer()) );
   connect( m_Controls->m_BtnOpenFile, SIGNAL(released()), this, SLOT(OnOpenFile()) );
   connect( m_Controls->m_ChkDisplay, SIGNAL(released()), this, SLOT(OnSetDisplay()) );
   connect( m_Controls->m_chkRepeat, SIGNAL(stateChanged(int)), this, SLOT(OnSetRepeat(int)) );
   connect( m_Controls->m_ChkMicroservice, SIGNAL(released()), this, SLOT(OnSetMicroservice()) );
 
   connect( m_Controls->m_SequentialWidget, SIGNAL(SignalUpdate()), this, SLOT(OnUpdate()) );
   connect( m_Controls->m_TimedWidget, SIGNAL(SignalUpdate()), this, SLOT(OnUpdate()) );
 
   this->SetInteractionComponentsEnabledState(false);
-
 }
 
 void QmitkNavigationDataPlayerView::OnPlayingStarted()
 {
 }
 
 void QmitkNavigationDataPlayerView::OnOpenFile(){
   mitk::NavigationDataReaderXML::Pointer reader = mitk::NavigationDataReaderXML::New();
 
   // FIXME Filter for correct Files and use correct Reader
   QString fileName = QFileDialog::getOpenFileName(NULL, "Open Navigation Data Set", "", "XML files (*.xml)"); //"XML files (*.xml);; Csv files (*.csv)" for additional csv files. Not supported yet.
-  m_Data = reader->Read(fileName.toStdString());
+  if ( (fileName == 0) || (fileName.isEmpty()) ) return;
+  try
+  {
+    m_Data = reader->Read(fileName.toStdString());
+  } catch (...) {
+    MITK_WARN("NavigationDataPlayerView") << "could not open file " << fileName.toStdString();
+  }
 
   // Update Labels
   m_Controls->m_LblFilePath->setText(fileName);
   m_Controls->m_LblFrames->setText(QString::number(m_Data->Size()));
   m_Controls->m_LblTools->setText(QString::number(m_Data->GetNumberOfTools()));
 
   // Initialize Widgets and create Player
   this->OnSelectPlayer();
   this->SetInteractionComponentsEnabledState(true);
 }
 
 void QmitkNavigationDataPlayerView::OnSelectPlayer()
 {
   if (m_Controls->m_RdbSequential->isChecked())
   {
     m_Controls->m_SequentialWidget->setVisible(true);
     m_Controls->m_TimedWidget->setVisible(false);
     mitk::NavigationDataSequentialPlayer::Pointer seqPlayer = mitk::NavigationDataSequentialPlayer::New();
     seqPlayer->SetNavigationDataSet(m_Data);
     m_Controls->m_SequentialWidget->SetPlayer(seqPlayer);
     m_Player = seqPlayer;
   } else {
     m_Controls->m_SequentialWidget->setVisible(false);
     m_Controls->m_TimedWidget->setVisible(true);
     mitk::NavigationDataPlayer::Pointer timedPlayer = mitk::NavigationDataPlayer::New();
     timedPlayer->SetNavigationDataSet(m_Data);
     m_Controls->m_TimedWidget->SetPlayer(timedPlayer);
     m_Player = timedPlayer;
   }
 
   this->ConfigurePlayer();
 
   // SetupRenderingPipeline
   this->OnSetDisplay();
 }
 
 void QmitkNavigationDataPlayerView::ConfigurePlayer()
 {
   // set repeat mode according to the checkbox
   m_Player->SetRepeat( m_Controls->m_chkRepeat->isChecked() );
 
   // TODO finish method
 }
 
 void QmitkNavigationDataPlayerView::OnSetRepeat(int checkState)
 {
   m_Player->SetRepeat(checkState != 0);
 }
 
 void QmitkNavigationDataPlayerView::OnSetMicroservice(){
   if(m_Controls->m_ChkMicroservice->isChecked())
   {
     m_ToolStorage = mitk::NavigationToolStorage::New();
     for (int i = 0; i < m_Player->GetNumberOfIndexedOutputs(); i++)
     {
       mitk::NavigationTool::Pointer currentDummyTool = mitk::NavigationTool::New();
       mitk::VirtualTrackingTool::Pointer dummyTool = mitk::VirtualTrackingTool::New();
       std::stringstream name;
       name << "Virtual Tool " << i;
       dummyTool->SetToolName(name.str());
       currentDummyTool->SetTrackingTool(dummyTool.GetPointer());
       currentDummyTool->SetDataNode(m_RenderingNodes.at(i));
       currentDummyTool->SetIdentifier(name.str());
       m_ToolStorage->AddTool(currentDummyTool);
     }
     m_Player->RegisterAsMicroservice();
     m_ToolStorage->SetName("NavigationDataPlayer Tool Storage");
     m_ToolStorage->RegisterAsMicroservice(m_Player->GetMicroserviceID());
   } else {
     if (m_ToolStorage.IsNotNull()) m_ToolStorage->UnRegisterMicroservice();
     m_ToolStorage = NULL;
     m_Player->UnRegisterMicroservice();
   }
 }
 
 void QmitkNavigationDataPlayerView::OnUpdate(){
   m_VisFilter->Update();
   mitk::RenderingManager::GetInstance()->RequestUpdateAll();
 }
 
 void QmitkNavigationDataPlayerView::OnSetDisplay(){
   DestroyPipeline();
   if ( (m_Controls->m_ChkDisplay->isChecked()) && ( m_Player.IsNotNull() ))
   {
     CreatePipeline();
   }
 }
 
 void QmitkNavigationDataPlayerView::CreatePipeline(){
   m_VisFilter = mitk::NavigationDataObjectVisualizationFilter::New();
   m_VisFilter->ConnectTo(m_Player);
 
   for (unsigned int i = 0 ; i < m_Player->GetNumberOfIndexedOutputs(); i++ ) {
     mitk::DataNode::Pointer node = mitk::DataNode::New();
-    QString name = "Recorded Tool " + QString::number(i);
+    QString name = "Recorded Tool " + QString::number(i + 1);
     node->SetName(name.toStdString());
 
     //create small sphere and use it as surface
     mitk::Surface::Pointer mySphere = mitk::Surface::New();
     vtkSphereSource *vtkData = vtkSphereSource::New();
     vtkData->SetRadius(5.0f);
     vtkData->SetCenter(0.0, 0.0, 0.0);
     vtkData->Update();
     mySphere->SetVtkPolyData(vtkData->GetOutput());
     vtkData->Delete();
     node->SetData(mySphere);
     m_VisFilter->SetRepresentationObject(i, mySphere);
 
     // Add Node to DataStorageand to local list of Nodes
     GetDataStorage()->Add(node);
     m_RenderingNodes.push_back(node);
   }
   m_VisFilter->Update();
 }
 
 void QmitkNavigationDataPlayerView::DestroyPipeline(){
   m_VisFilter = NULL;
   for (unsigned int i = 0; i < m_RenderingNodes.size(); i++){
     this->GetDataStorage()->Remove(m_RenderingNodes[i]);
   }
   m_RenderingNodes.clear();
 }
 
 void QmitkNavigationDataPlayerView::SetInteractionComponentsEnabledState(bool isActive){
   m_Controls->m_grpbxSettings->setEnabled(isActive);
   m_Controls->m_grpbxControls->setEnabled(isActive);
-}
+}
\ No newline at end of file