<HTML><BODY>Hi all, <br><br>i try to use the FourPaneViewer from VTK-example <a href="http://vtk.org/gitweb?p=VTK.git;a=tree;f=Examples/GUI/Qt/FourPaneViewer">http://vtk.org/gitweb?p=VTK.git;a=tree;f=Examples/GUI/Qt/FourPaneViewer</a><br><br>I build it without errors, but when I run the example, i get several errors:<br><br>- ERROR: In /home/joe/Programme/VTK6.0.0/Interaction/Widgets/vtkImagePlaneWidget.cxx, line 1688<br>vtkImagePlaneWidget (0x88f8ef8): Invalid X extent: 2.14748e+09<br>- ERROR: In /home/joe/Programme/VTK6.0.0/Interaction/Widgets/vtkImagePlaneWidget.cxx, line 1706<br>vtkImagePlaneWidget (0x88f8ef8): Invalid Y extent: 2.14748e+09<br>- ERROR: In /home/joe/Programme/VTK6.0.0/Filters/Sources/vtkPlaneSource.cxx, line 102<br>vtkPlaneSource (0x88f2be0): Bad plane coordinate system<br>- ERROR: In /home/joe/Programme/VTK6.0.0/Common/ExecutionModel/vtkExecutive.cxx, line 754<br>vtkCompositeDataPipeline (0x8925160): Algorithm vtkPlaneSource(0x88f2be0) returned failure for request: vtkInformation (0x8920700)<br> Debug: Off<br> Modified Time: 14726<br> Reference Count: 1<br> Registered Events: (none)<br> Request: REQUEST_DATA<br> ALGORITHM_AFTER_FORWARD: 1<br> FROM_OUTPUT_PORT: 0<br> FORWARD_DIRECTION: 0<br><br>Can somebody help me, tell why i get this errors?<br><br><br>Thank everybody for help<br><br>Roman<br><br><br><br></BODY></HTML>