I was getting ERROR: Virtual Router could not be started. Supported hardware may not have been found. Digging through code I found it was failing searching for device "microsoft virtual wifi miniport adapter" which was not found on my system.
Using netsh from an Administrator command prompt I was able to enable it and turn it on. http://msdn.microsoft.com/en-us/library/windows/desktop/dd815243(v=vs.85).aspx
netsh wlan set hostednetwork allow
netsh wlan start hostednetwork