Cary,

I've tried all kinds of models from the 3D Models page, and never had any problems, so I'm pretty sure the problem doesn't lie with the models, but with your computer.

Most problems with SH3D are caused by the graphics card and/or drivers, or by a wrong installation of Java. So I suggest you start looking there. Unfortunately I know next to nothing about Apple computers, so I can't help you there.

If you want more detailed help from someone, I suggest you give a more detailed description of what's going wrong.

Hans