ahhh , I did not even handpicked the file itself, I just select the folder, that's very stupid . thank you very much John and David ahmed -- View this message in context: http://vtk.1045678.n5.nabble.com/configuration-of-VTK-with-Qt-tp5718870p5718883.html Sent from the VTK - Users mailing list archive at Nabble.com.