You know, I had the exact same problem on XP home the other day. I had been rendering without fail for a long while, but then all of a sudden I could render anything to a seperate windows, no matter what size. I read the CL posts about this issue, and they suggested setting a fixed size for the swap disk, instead of letting Windows mess with it. I have a relatively large hard drive, but what I did was actually reduce the swap file in size from what Windows had set it, and it totally did the trick. I can render any size now up to the max of 4096X4096, with no other programs needed. I have 3/4 gig of RAM. Jack