I too am getting this error message using Veritas 9.1 SP4a
My exchange 2003 SP1 backups used to work properly. However a few days ago I stupidly ticked the Userdata area in Shadow Copy Components and that's when my problems began.
I have deleted the job, re-created it, renamed the selection list, moved the resource order, made sure the Userdata area is not ticked and I can't make this error go away. I was going to uninstall the whole Backupexec package and start from new but thought I'd give this forum a try first.
Please help as this is drving me nuts. As I said my exchange backups have been working fine until I ticked that Userdata area. Now I can't even create a new Exchange job that works - it's like Backupexec seems to think the Userdata is ticked when it isn't.
There is nothing else (ie. NT backup) running on the exchange box so there is no conflict with another application.