Exchange Server 2013 - Unattended mode recoverserver fails

Re-installing CAS server. This is something I have done before without issue. In order to properly upgrade from Server 2012 to 2012 R2, I have actually deleted the VDisk, created a blank. Installed server 2012 R2, ran prerequisites and hit the Exchange 2013 SP1 setup as follows:

.\setup.exe /IAcceptExchangeServerLicenseTerms /m:RecoverServer

This time, it hit an error trying to install the Frontend Transport Server:

Error:

The following error was generated when "$error.Clear();

set-ExchangeServerRole -Identity $RoleFqdnOrName -IsFrontendTransportServer:$true -DomainController $RoleDomainController

" was run: "Property IsFrontendTransportServer can't be set on this object because it requires the object to have version 0.1 (8.0.535.0) or later. The object's current version is 0.0 (6.5.6500.0).".

Any assistance would be greatly appreciated.