DNS cluster showing nothing in my cluster

I had set up my DNS cluster and it had been working for the past 3 weeks. I went in to check the cluster and found that the cluster is enabled but the error below is displayed:



Im not sure what has happened but it almost seems like it does not see my cluster but the cluster is still working and I cannot remove the cluster.

UPDATE: I have checked my Nameservers and they are showing the host server cp1 but from the cp server none of the DNS servers exsist! I am starting to worry as I cannot find any log regarding anything that could of happened and I have live domains passing thru the DNS and I am not sure how much of a impact this will have.