V-79-57344-34036 - An unknown error has occurred.

HI,

I'm trying to find what could be triggering the above error in Backup Exec 2010.

It happens when we backup a local server and to a USB removal Hard drive.

Backup2Disk has been set to split the backup files in to 50GB due to performance issue, error seems to happan after the first 50-70GB error seems to happen arround these sizes of the backup.

Thanks 

Dan.