Issue trying to Install Titan Server on Windows 2012 VM server - fully patched

Issue trying to Install Titan Server on Windows 2012 VM server - fully patched

Hi All, I am trying to install the trial version of the Titan Server on my Windows 2012 VM Workstation machine. The Server is fully patched, it was the first thing I did. 
When I double click on the install .exe I instantly get a windows error  "Unknow Variable "msg.common.windowsminos"  
My assumption is that Titan is no longer supported on Server2012, but the support site says it does:
"Windows Server 2012 (and R2) and later, all editions, 32-bit and 64-bit".
Does anyone know why the installer refuses to run?