I'm trying to back up my blackberry on my computer using the desktop manager. But when ever I try to I get a unknown error, anyone know what the problem is? I'm running windows vista if that makes a difference. I would enjoy to get any help.
It could be in error in a specific database on your BB. Start DM and go into Backup and Restore > Advanced, and backing up the databases one at a time to see if any have errors.