I have a fix! I can’t isolate the fix with 100% certainty, because I tried a few things at once, but I’m still pretty confident I know which one of the things I did was the defining factor.
Background: I’m running CS 5.5 on OS X Lion.
The fix: I noticed that a coworker had named the .prproj file something wacky that included the ‘/’ character in the filename. I edited the name of the .prproj file so that it didn’t contain that character anymore. That’s it!
Probably irrelevant:
- I made sure that my external disk, where my scratch folders are, had permissions set to ‘Read & Write’.
- I cleared the Media Cache.
- I deleted all the render files in my sequence.
Hope this helps.