Hi, everyone, When I was combining ITK with VTK using CMake, I choose the source dir as \InsightApplication-1.2.0, and the target dir the same. In the Cmake table, I put USE-VTK ON, but it always warned me error in VTK-DIR. Since I have installed both VTK4.0 and VTK4.2, what directory should I choose for VTK-DIR separately for them? Thanks Ouyang