Cluster error: "There was an error cleaning up the cluster nodes."

This could be down to a lot of conditions, but just to help anyone else out there I will outline why I recieved this error message.

There was an error cleaning up the cluster nodes.

It occured because I was trying to setup a two node failover cluster with ADDS installed / one of the members being a domain controller. Although I found contradicting information - the overall stance appears that this setup is not supported.