If it doesn't do it when it's on drive "c" then I'd say there's probably some connection that Vue is trying to maintain (like a file that is hardpathed in the program for it to look for only on the c:) That's my only guess. Also, I've noticed Vue rarely actually gives you the warning message that Eon says it is supposed to give you, it usually just crashes outright or does the vue5.eon error before crashing. I've also noticed that it seems to not be able to handle as many poly's as easily as Vue 4 used to (one of many reasons Vue 4 is still on my system) but I've noticed the same thing when running Vue 4 Pro on a much better system than my Vue 4 is presently installed on. Hope this helps!