VMMAdminUI has stopped working - Microsoft System Center 2012 SP1

Hi,

When selecting 'Properties' of a VM SCVmm crashes with the following error - "VMMAdminUI has stopped working".

I get the following Event Log errors:

Faulting application name: VmmAdminUI.exe, version: 3.1.6011.0, time stamp: 0x50ab00c1
Faulting module name: KERNELBASE.dll, version: 6.3.9600.18666, time stamp: 0x58f32841
Exception code: 0xe0434352
Fault offset: 0x00015608
Faulting process id: 0x7c4
Faulting application start time: 0x01d2e0ebc2a23d63
Faulting application path: D:\Microsoft System Center 2012\Virtual Machine Manager\Bin\VmmAdminUI.exe
Faulting module path: C:\Windows\SYSTEM32\KERNELBASE.dll
Report Id: 19c03445-4cdf-11e7-80ea-42f2e9db8049
Faulting package full name: 
Faulting package-relative application ID: 

Application: VmmAdminUI.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.NullReferenceException
   at Microsoft.VirtualManager.UI.WpfControls.ElementHostGC.GetFieldValue[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]](System.Type, System.String)
   at Microsoft.VirtualManager.UI.WpfControls.ElementHostGC..cctor()

(I've trimmed this one down)

And the following trace error:

[14]1A00.1B10::‎2017‎-‎06‎-‎09 09:37:10.254 [Microsoft-VirtualMachineManager-Debug]24,1,Program.cs,52,System.TypeInitializationException: The type initializer for 'Microsoft.VirtualManager.UI.WpfControls.ElementHostGC' threw an exception. ---> System.NullReferenceException: Object reference not set to an instance of an object.  

I have tried a fresh install to 2012 R2 with the same issue. And also a re-install of 2012 SP1 with a brand new database. I add one VM to test and the same thing happens. This happens when clicking ANY VM. Installed the latest Rollup 11 and the issue remains so I'm pretty stuck! Any ideas?

Was led here by this thread which shows the exact same error that I am getting - https://answers.microsoft.com/en-us/windows/forum/windows_other-winapps/vmmadminui-has-stopped-working-microsoft-system/728899b0-a258-40d5-a91f-5af57d9fbdb6 

Regards,

Simon