Thanks for responding so quickly...I was afraid I would be asked tech. questions (now everyone will know how dumb I am) :-) I am running ME 255 Ram 933 MHz 38 GB I don't know how much Ram it can have, probably more than it does right now, but I'm not sure. The images I'm trying to do are not complicated and it seems to depend on how big the texture maps are, but not certain about that either. I never know when it will mess up so I save everything before I try to do a large render. When I say large, I'm not talking about huge...sometimes even 800 x 800 will screw it up. Sometimes just checking render in new window no matter what size will mess it up. This is really frustrating. :-(

My idea of rebooting is kicking somebody in the butt twice!