Cannot run Cimatron (CAD) in PD12 - Says needs 32 bit colour

Hi Guys,

I have installed Cimatron E12 into a Windows 10 Guest Virtual machine running in Parallels Desktop 12. When Cimatron starts it throws an error about the display running in 16 bit mode and not 32 bit mode.

However when I query the windows 10 virtual machine all indications are that it is running in 32 bit mode. When I list the modes which are available (under advanced settings for the graphics card) for the monitor it is running in 32 bit colour.
Details of virtual machine
Windows 10 64bit

Host
MacBookPro non Retina display 2011

 

How do I change this? There are documents on the web to do this for earlier version but not on PD12