Problem connecting to systemstate after upgarding to BE 11d

[noodles]

Hi,

we have a small BE installation which was just running fine ... until now.
We upgraded to BE11d which was running fine according to the log.

After that I pushed Remote Agents to all client servers and rebootet them.
Installation was successfull.

But now we get the error that we cannot connect to the systemstate anymore:

"\\<server>\Shadow?Copy?Components
V-79-57344-33932 - Unable to attach to a resource.  Make sure that all selected resources exist and are online, and then try again."
Unable to attach to \\<server>\System?State"

Same for \\<server>\Shadow?Copy?Components

What I have recognized is that this only occurs on systems (Windows 2003) without any SP.
Servers with installed SP1 or SP2 are getting backed up almost fine.

Help would be really appreciated

Regards
/Stefan