No, it isn't. I can run all examples from Example/GUI/Qt also, but not my own application -- View this message in context: http://vtk.1045678.n5.nabble.com/Problems-with-vtkScalarsToColors-QVTKWidget-in-vtk5-8-0-tp4977144p5077480.html Sent from the VTK - Users mailing list archive at Nabble.com.