vray was fine till i switched from laptop to desktop and then all renders started to behave in a strange way. the first three passes were fine. but when it rendered, at times the image would be neon blue, at times grey and at times white. sometimes it would not even show the passes except for a black screen. after endless tweaking and tutorials, this is what i got. i reinstalled 3ds max 2013, vray 2.0. HELP! i did a region render to show what i mean.