Multi CPU Nowdays creating VMs with multi-processors is an easy thing.  It’s not necessarily a good thing.  I Highly recommend you stick with single vCPUs — and only really use multi-cpu VMs if you really need the raw thumping multi-threaded grunt.  (such as the Microsoft Transporter for Domino)

So now you have the problem of a multi cpu VM, with a Multi Processor HAL.  But you need to convert it back to a single processor VM.  You need to do more than remove a virtual CPU, you need to also downgrade to a uni processor hal. 

I’ll round up some resources and post them back here.