Hyper-V BAckup failure (Saveset Problem)

Hi Community,

I get a strange problem this morning:

We are backing up an Hyper-V environment based on Windows 2012 with NMM 8.2.0.1 and Networker 8.1.2.6.

The VM file are located on a SMB3 Share on a file cluster.

If I backup one VM with savesset APPLICATIONS:\Microsoft Hyper-V\[Vm Name], everything is fine.

But if I try to backup the all Hyper-v environment with saveset APPLICATIONS:\Microsoft Hyper-V\,

backup is failing with the following message in NMM.log (see please attachment).

Any Idea?

Thanks

Greg