The video driver VMWare SVGA 3D was at first only a warning for the Windows 10 upgrade process but it is now a critical error that will cause the upgrade not to be offered.
"Windows 10 Will Not Run On This Machine"
"Here's Why Windows 10 Cannot Be Installed"
"VMWare SVGA 3D"
This applied to both Win7 & Win8.1 PRO X64 Workstation11 VM's.
I cannot find an update at this time