Then try setting the configuration to win64 (this means recompiling VTK, of course). - David On Wed, Jul 17, 2013 at 3:30 PM, Massinissa Bandou <Massinissa.Bandou at usherbrooke.ca> wrote: > thanks for reply David, > > I'm using window7 64bits 4Gb of memory and I'm programming on vs2010. the > configuration manager is set to win32. > > Massi