Hi I "feel your pain"-no I am sure you are far from the only one. Poser has dreadful memory leaks. Is this new behavior-or has it always done this? I am on a Mac-so I don't have exactly that problem-but I find that closing and reopening Poser 4 periodically helps free up memory and avoids crashing-I never do more than a few renders in a row-particularly with high poly figures with hi res textures- If I save often and restart Poser periodically I have few probs with P4.03 I recently got ProPak and am delving into bugs and crashes there also. Eric