The thing is that it's happening on Carrara 5.1 Pro. I doubt they have the incline to fix it in their prior version. Mark, do you have an intel Mac? If you do, is their any way I could e-mail you my file and see if it renders correctly. You don't have to do a hi resolution render. The anomaly shows even in low resolutions. But I want to test Carrara 6 on Intel, to see if upgrading fixes the issue.

Do they have a working Demo of Carrara 6. I guess I could download that ant test it my self.