I'm on a G4 400mhz, OS 8.6, and I do seem to have some conflicts , expecially with trans maps. But if I reboot with just the OS8.6 All (extentions on) instead of MY settings. The problem goes away. So what am I saying, you ask? Hehehe I'm agreeing that I'm fairly sure it's a 3rd part extention that's causing the problems. Or then again, you may want to ask MetaCreations if they indeed tested Poser with OS9. Cause you all know OS 10 comes out this summer! It's soooooo cool! James