Hi BillClinton,
I checked your logs and the error is generated by the "/mnt/disk1/Media/" folder.
The error was thrown when trying to copy from Media/TVSeries and later from Media/Movies, although one of movies was copied.
I didn't see any permission errors, but just in case could you post the output of
ls -al "/mnt/disk1/Media/TVSeries/House MD"
I don't think it will show anything out of the ordinary though.
My only other guess is some issue with the disk itself, have you checked disk1's smart status ? Are you getting any disk errors in the system log ?