HA-VMM cannot be installed : HAVMM name in db is differs from the user specified HAVMM name

I have a two node HA VMM cluster.  This is working correctly and has been for while.  I am now attempting to add an additional node to the cluster.

I joined the node to the cluster and then start the VMM install and follow the wizard till it gets to the Database Configuration Page.  When I Click Next here nothing happens.

If I check the C:\ProgramData\VMMLogs\SetupWizard.log file I see the following error as the last item.

If I check the S

CVMMCDB01 I find the HAVMMName property with a value of SCVMMC01.domainname  This is the same value that is returned when using powershell with Get-SCVMMServer

When I check the cluster configuration it is the same story.  I connect to the  cluster name scvmmc01.

Even if I look at Cluster Manager I can see the name is tied correctly.

Any ideas would be great as I am effectively now stuck and cannot install another node.