Hi, Brian,
Many thanks for reporting the issue. I tried your cases. Install Inventor and Fusion from Product Design Suite Premium 2012 in Win7 32bit OS. But I can't reproduce it. Fusion works well.
In your cases, have you tried to uninstall Fusion-->Install it again to see whether Fusion can work? If you still can reproduce it in your pc, keep contacting us please and give more information about your OS environment.
Hope this helps.
Wendy
Wendy Chen
Fusion 360 Team
Autodesk, Inc.