Thanks for the help, guys. If I do: "git clone git://git.code.sf.net/p/gdcm/gdcm" will that clone 2.6.6? I'm not so good at GIT... -- View this message in context: http://vtk.1045678.n5.nabble.com/GDCM-installation-problem-openGL-tp5741192p5741345.html Sent from the VTK - Users mailing list archive at Nabble.com.