recieve error in vdi.log when backup SQL 2000 Server DB

using arcserve 2000 to backup database receive error in
VDI.log:
2006/10/05 02:03:24 pid(1948) tid(500)
Error on DBASQL70TID500VD0
Error at TriggerAbort: invoked
2006/10/05 02:03:43 pid(1312) tid(1892)
Error on DBASQL70TID500VD0
Error at SVDS::Open: Dup(stateEvent) Status Code: 6, x6
Explanation: The handle is invalid.
2006/10/05 02:03:45 pid(1948) tid(500)
Error on DBASQL70TID500VD0
Error at TriggerAbort: invoked
2006/10/05 02:03:46 pid(1948) tid(500)
Error on DBASQL70TID500VD0
Error at TriggerAbort: StateEvent Status Code: 6, x6
Explanation: The handle is invalid.
2006/10/05 02:03:46 pid(1948) tid(500)
Error on DBASQL70TID500VD0
Error at TriggerAbort: CompletionSem Status Code: 6, x6
Explanation: The handle is invalid.
2006/10/05 02:03:46 pid(1948) tid(500)
Error on DBASQL70TID500VD0
Error at CVDS::Cleanup: Close(State) Status Code: 6, x6
Explanation: The handle is invalid.
2006/10/05 02:03:47 pid(1948) tid(500)
Error on DBASQL70TID500VD0
Error at CVDS::Cleanup: Close(CompleteSem) Status Code: 6, x6
Explanation: The handle is invalid.
MS SQL Server version is 2000.
Pls help. Thanks
Don't have an answer but check out similar post @. http://forums.databasejournal.com/showthread.php?t=40177sql