I've been using Poser 6 successfully on Tiger; it doesn't always "crash as soon as you hit a button", but it will SOMETIMES get itself into a state where it reliably crashes when you try to select from a popup menu (like the figure or body parts menu off the Pose window). Some people see crashes in rendering, but I generally don't. I had the same popup window problem with P5 on Panther, though generally only in the material room node menus. (Though a more common problem was that the popups were only partly populated... without any node type I might have actually wanted.) And as for "Renderosity has a Mac Forum", kaveman; yeah, it does. It also, surprisingly enough, has a Poser forum, and this is a Poser issue. Makes perfect sense to talk about this stuff in either place; and even, in fact, in both places.