Are you sure it's on Import that it crashes?
From the log on your 1st post I see that it crashes immediately after it tries to start playing something:
0209719: 6192: Playback: CPlayerZoneDisplayInfo::UpdateFileInfo: Zone {Mancave} Playback state is STOPPED
0209719: 6192: Playback: CPlayerZone::Play: Start
(...)
0209750: 1444: Playback: CPlayerZoneDisplayInfo::UpdateFileInfo: Zone {Mancave} Playback state is PLAYING Position 20000, Duration 221000
0209750: 1444: General: TopLevelExceptionFilter: Unhandled exception -- program crashing
You should try to find what exactly is causing it to crash; don't do multiple things at the same time. Start the import process and let it finish.
If it's really the Import, it's usually caused by bad files - I see MC is having trouble importing some .PSD covers you have there (maybe they're too large). Try to remove them or exclude them from Import. You can also try importing you collection in chunks, by subfolder, instead of trying to import it all in one go - this will tell you where the problematic files are.