HP P6000 VSS Hardware Provider Credentials Invalid

[StealthCobra]

Hello,

I'm having some trouble backing up a VM on a clustered server using DPM 2012 SP1. The host is server 2012 and the VM getting backed up is 2008 R2. In the hosts event logs when I start a backup I immediately get the following...

Error - HP P6000 VSS Hardware Provdier Event ID 2051 - Invalid username or password entered by the user

The backup job eventually fails. I've double checked that all the DPM settings are correct. I've even went ahead re-installed the agents and re-joined the servers to DPM. I'm not really sure what or where to look for these credentials. Any help would be appreciated. 

Thanks.