Query failed when watching Dedup Backup Sets

Hi,

after installing BE 2012 SP2 I get the error "Query failed" if I want to see the Backup Sets stored on an Dedup-Device.

I'm able to intory and catalog the device but I can't see the list of backup sets. I'm able to select backup sets in the restoring menu,

so I think this is just a display problem?

Does anyone has the same problem and knows how to solve it?

Thanks in advance.