It does solve the original problem only when I use CMake. If I try to compile through my makefile, I got the same error. Thanks Bill. -- View this message in context: http://itk-insight-users.2283740.n2.nabble.com/Error-converting-ITK-to-VTK-tp7587392p7587408.html Sent from the ITK Insight Users mailing list archive at Nabble.com.