SQL backup error

[pd77]

Hi all:

I am new to the legato networker . All these days backup for my sql server backup is working fine and today i got the following error and my backup failed. Can any one please help me on this.

error logs:
======
[13636] Internal system error, please see nsr\applogs\xbsa.messages on the client system for reason.
[13636] Microsoft SQL Server Provider error:
[13636] [Microsoft][ODBC SQL Server Driver][SQL Server]Write on 'Legato#023be459-ad23-45af-ab25-74be600e5fea' failed, status = 995. See the SQL Server error log for more details..
[13636] [Microsoft][ODBC SQL Server Driver][SQL Server]BACKUP LOG is terminating abnormally..
[13636] E:\LNMs_2003\nsr\db_apps\bsmsql\nsrsqlado.cpp(2074): ExecuteFailed event arrived.
[13636] bsVdiAbort: handle is bad
[13636] Processing model failed, the item will be skipped

And my nsr\applogs\xbsa.messages says:
===============================

XBSA-1.0.1 LNMs_2003.Build.294 13708 Wed Nov 28 10:22:26 2007 _nwbsa_is_retryable_error: received a network error (Severity 5 Number 17): Unable to extract resource info for client mnapps.

Regards,
PD77.