Hi jsprogg, no, like I said if I even move just one vertice, the proxy won't render - so any adjustment at all screws it up. I can delete the proxy and create a new one, but having to do this every time I make any adjustment isn't really practical. I should just be able to render, adjust, render and so forth. No one else came across this? I googled it and it has been mentioned elsewhere, but the suggestions I seen (reinstall, change from mentalray to maya software and back) have not worked. cheers, gubar.