I'm currently running version 7.3.2041.0 of the client and after having followed TekResults' suggestion i'm still only able to perform a backup operation after having disable eset's shield.
In my case de bcdedit.exe gave me the result: device partition=\Device\HarddiskVolume2, which i promptly added in exclusions, along with the file path to c:\windows\system32\wbadmin.exe to no avail.
How could i get further support?