I have noticed the crashing while scanning bug.
On two separate occasions now I have added two or three films to the hard drive and scanned the favorites folder. It would crash half way through the scan, I need to unplug the mede8er at the mains and then when I try and scan again it fails to get the correct information.
The only way to fix is to plug the hard drive back into the computer and delete the scanned stuff and scan folder again.
your movies are an internal hard disk?
this is an old and known problem,
(can be found in topic) I think that is problem memory problem or something like this.
I use earlier also internal hdd and I tried to parse over 2000 movie collection data in jukebox but this was not successful ever.Scanning got stuck and forced to shutdown always removed the db file.I must managed to jukebox just by adding a few film at a time, and a new scan...
it is wise to take a backup db file sometimes.. would be easier in the future.