A couple of times I've gotten the following error when backing up my Thunderbird mail to a NAS mounted on Z:. I'm running Windows 7 and FFS 10 (though the problem also happened once on FFS 9.*)
Database file is corrupted: "C:\<path>\sync.ffs_db" Unexpected end of stream.
What is the correct approach to fixing this? The first time I just recreated the batch job and had it back up to a new directory, but I'd prefer not to do that every time.