I tried converting them to VOBs and it didn't have any effect. In fact the only time I was able to get Vue 5 Infinite to render the scene is when I converted the Poser objects to low count polygons. My past experience with Carrara was that it was junk. However that was long ago with v1. I gave up on it then. I'm sorry to hear you are having instability problems with v5. Perhaps I may stay away from Carrara too.