Hyya I found that this was a virtual memory problem. Poser (for obvious reason) like OODLES of virtual memory. I have Win2KSP2 so bear wih me. You need to put a virtual memory slice on each partition(if you've only the one -fine) set the virtual memory setting to the same value ( instead of a spread - so instead of,say, 500 - 1000Mbs you add 1000-1000Mbs) This worked for me I also found that if I used the P4 render I got the famous "insufficient disk space) and nothing. P5 is a memory hog -feed it lots and it will love you PaulC