No Backup Exec VSS Writer "Deduplication Storage Writer" on BE2012

Hello,

today i saw a prob with my Dedupliction Folder.

I can´t backup my DeduplicationFolder because of a missing VSS Writer "backup exec deduplication storage writer". The Job runs with errors, when i list the vss writers there is no entry.

In the selection of my backup job there is no entry for the deduplication store under Shadow Copy Components\User Data.

I don´t know since when the writer is missing because of the Job runs only once every six months...

Any ideas???

Greatings

HN