Yes, we have Veeam installed on the host server running 3 vm's.
I had been trying to add the server as a 'Microsoft Hyper-V server (standalone).
So, I tried adding the server as a 'Microsoft Hyper-V cluster and receive the same error in the following topic.
RPC Error adding Hyper-V Server http://forums.veeam.com/viewtopic.php?f=25&t=9991
Firewall is turned off, and I tried to disable the anitvirus, but we still get the error.