error adding wireless virtual network

Hi.

I am evaluating Windows server 2012 Datacenter, I had a Wireless network card Buffalo and a virtual swith attached to it, I had to use another network Wireless card and I am trying to use it to create a virtual switch, but I get the following error:

I've erased the virtual switch attached to the Buffalo Wireless card, Why am I getting this error?

I hope anyone can help me

Thanks!!!