I had found a detailed list of how to uninstall and reinstall Compressor, and spent a lot of time doing that today. I expected that it would give me a fresh, clean copy of Compressor, especially replacing the presets. It didn't work out that way, the presets are the same as before. And now Compressor won't submit a job - it's grayed out. So I'm worse off that when I started.
Compressor Repair doesn't seem to have fixed anything, though it looks like a good tool to have around.
I thought I would bring you up to date on how this worked out. The local Apple reseller was able to remove and reinstall FCS for me for a very reasonable fee, and that seems to have fixed the problems I was having.
I've made note of the Digital Rebellion apps - including one that claims to remove all of Final Cut Studio - and appreciate the suggestions.
Thanks for your help.
Thanks so much for the link to Digital Rebellion!
They also have a product to uninstall Compressor 4.
This is a great utility to remove Compressor so you can reinstall the product which solved my issues with compressor.