Yup, I didn't find any other option and We are thinking same to build application with two separate OpenGL compatibility. Thanks for ur time Elvin , Ken Regards, Satwik -- View this message in context: http://vtk.1045678.n5.nabble.com/vtk-7-1-openGL-2-0-crash-tp5744014p5744045.html Sent from the VTK - Users mailing list archive at Nabble.com.