VMSS not working

[davenorthey]

The VMSS section of this template doesn't work.
If I select "Yes" for "Use Vmss For Compute Nodes" it errors with "vmNamePrefix in the parameters file are not valid" (see attachments).

Also, is it possible to include the installation of Nvidia drivers as part of this template (I'm using NC24r VMs as computenodes)?

Thanks

Dave Northey