I have ArchiCAD 10 running on Vista...did the custom intall w/out the graphisoft shell extension and all...and it works fine. I have a 3D rendering that works fine for navigating, but not for Perspective view though and this is perplexing. When I hit Shift+F3, my screen is just white with a couple of black lines on it. If I select all I can see the nodes and some of the lines, so I know they're there. Please Help!!!