vSphere Data Protection backup fails

Hi all,

i've configured vSphere Data Protection 5.5 on my Environment.

Installation was ok and i configured a Backup Job.

The Jobs fail on all machines with

XXX vcbimage.label not found XXX

<Machine Name>

Abgeschlossen

Error 10055:  VixDiskLib_Open attempt to connect to virtual disk failed

<data protection appliance host>-proxy-7

ESXi Server Version is 4.1

vCenter Version 5.5

Has someone an idea whats wrong here?

Any help would be great.

Thanks and best regards,

Gernot