Memory can be the problem, or it can be even simpler. Sometimes Poser goes hunting for files, and when it can't find them, just gets lost. Try doing everything in stages. First load Stephanie with no texture and pose her. Then render. If there are no problems, apply the hair, and re-render. If there are problems here. Try another hair model with a very simple texture. If there are still no problems, apply a texture to her Steph. I bet thats when the problem shows up. If it does, try a different texture or remove the bump map (they take a lot of memory sometimes). I usually convert any high res texture (2000X2000 or more) to a lower res texture (1000X1000 or even 500X500) for easier handling, and only apply the high res for the final render. Also, try clearing out the memory cache and defragging your hard drive. If the swap file is dynamic and you've got a badly fragmented hard drive, it winds up writing bits of the temp files all over your drive and getting lost. Hope this helps.