Strange Problem with TSM Imagebackup

Hi,

since yesterday we have a very strange problem with our TSM-Imagebackup.

Contents of dsmerror.log:

01/15/2013 20:01:19 ANS5250E An unexpected error was encountered.
TSM function name : transSrvAttribDep
TSM function : Unknown Windows depedendent attribute format '0xA'
TSM return code : 287
TSM file : psattrib.cpp (490)

01/20/2013 15:00:40 ANS1228E Sending of object '\\zdhcln\y$' failed
01/20/2013 15:00:40 ANS4020E The data format for object '\\zdhcln\y$' is unknown. This usually occurs when the file was backed up or archived by a later version of TSM.
01/20/2013 15:00:40 ANS1813E Image Backup processing of '\\zdhcln\y$' finished with failures.

01/20/2013 15:00:40 ANS1512E Scheduled event 'IMAGE_SO_15' failed. Return code = 12.


Content of dsm.sys:

NODE ZDHIMAGES
CLUSTERNODE YES
PASSWORDACCESS GENERATE
DOMAIN Y:
HTTPPORT 1585
TCPSERVERADDRESS 172.30.0.13
TCPPORT 1500
RESOURCEUTILIZATION 2
TXNBYTELIMIT 2097152
TCPWINDOWSIZE 63
TCPNODELAY yes
LANG AMENG
SCHEDMODE PROMPTED
QUIET

snapshotproviderimage VSS
domain.image Y:

ERRORLOGNAME Y:\TSM\dsmerror.log
SCHEDLOGNAME Y:\TSM\dsmsched.log
ERRORLOGRETENTION 14
SCHEDLOGRETENTION 14

Include.Image Y: MC_IMAGES


I'm getting this failure the first time....no doubt where to look for a solution...
Anyone that can help ?

Thanks