Question : Backup exec 12.5 issues

We have a single server environment with Backup Exec 12.5.  (Small company about 7 people)  We have been able to backup files, shares and databases, but not system state, since a power outage last week.  (Needless to say I have 1 good backup of the system state form a week ago)  I keep getting an "access is denied" error for the system state during the backup, but when I test the credentials, everything is kosher.  I have used the SYSTEM account, domain admin , and back operator accounts with no luck.   Symantec doesn't even have an answer (Error code is V-79-57344-65149).    Has anyone ever seen this?  We are also using Endpoint.  The client updated everything on their own, so we had no control over what they did.  The Windows event log has been useless.

Thanks

Answer : Backup exec 12.5 issues

Gents, thanks for the helpful comments.  It turns out some files with backup Exec were corrupt.  Unistalled, reinstalled and reupdated and everything was fine.