Thanks. But it’s not just slow. It will render fine a few times, then render only a few seconds. Then render only a couple of frames with that error next. From that point on, I can only get the 2 frames of render when hitting the zero key or selecting Ram Preview from the menu. Doesn’t seem that overall ram would be the problem, My iMac is core duo with – sorry – 4 gigs not 3 of ram. Again, when I talked to tech support (in India) they told me this was an issue with Snow Leopard. I was wondering if anyone else had this issue. Thanks for your help.