Win2k Backup of SQL: cannot open (unknown error 32)

[goeze]

Hi,
I get following Networker error message :
"savepnpc: E:\DBLogs\dcs5_Log.LDF: cannot open (unknown error 32 (0x20))"
This results of a Backup of a SQL-Database. We do an online backup with following sql-command:
"isqlw -S server -E -i c:\tools\sql\backup_msdb.sql -o c:\tools\logs\sql\backup_msdb.log". This should create some Backup-Files of the database, which I normaly should save with networker.
But then I get the message above. But in fact no other then the backup process should have these files in progress.
Does anyone have an idea ???
Pls help me ! ! !