Ekahau ESS, Windows 8.1, VMware and NIC-300 USB

I run Windows 8.1 in VMware Fusion on a MacBook Pro. Recently made the switch from AirMagnet to Ekahau ESS, I was distraught to discover that on first run after installation Ekahau ESS was not detecting my NIC-300 USB adaptor. Windows Device Manager acknowledged the adaptor, even claiming the device was working properly. The behavior