I have a project that I was working on today that seems to have somehow become corrupted. Everytime I open it, and then attempt to Close Project, premiere will stop responding. 
I've tried creating a new project, and when I import the sequence from the older project file, save, and and attempt to Close Project, premiere stops responding...
A couple of other projects seem fine. So somehow, this project must have become damaged or something.
How can I debug this issue so i can get the sequence back to keep working?
Thanks,
-ken