Hi,
Please refer to the following link
An unexpected error occurred when cleaning up VERITAS Snapshot Provider (VSP) snapshots. Make sure that no other application has a lock on the cache files created by the snapshot operation.
http://support.veritas.com/docs/276343
and
The Backup Exec Advanced Open File Option cache file is not deleted when running Norton AntiVirus Corporate Edition on the system.
http://support.veritas.com/docs/257796
Hope it helps.
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