I have a laptop and a desktop computer both running Windows 2000 Professional. I created a briefcase on my laptop to synchronize projects between it and my desktop computer. It seems to have worked fine for awhile, but suddenly, I get errors telling me that a file is locked or that it is read-only and it can't perform the updates. No other applications are open, no files are marked read-only, and I'll get these errors even if all I try to do is send a file over that should be being created on the target machine. What could cause this sudden break in functionality? Is it corrupted? How best to go about fixing the problem?