I delete vtk6.0 and use vtk5.8 instead at last. I have to say that vtk6.0 is a little diffcult for a new student like me. Anyway, thanks for your help. -- View this message in context: http://vtk.1045678.n5.nabble.com/can-t-open-QVTK-lib-tp5725030p5725045.html Sent from the VTK - Users mailing list archive at Nabble.com.