Ad-hoc Network - No valid downstream NAT configuration

Hi all, what does it mean? I'm using Connectify Pro and sent a support request ticket, meanwhile two weeks later and still no response.
Connectify says it is running, sharing local connection, on 192.168.37.1 I've tried adding that ip to the router and it says it's illegal.
I have a wired adsl modem, and an atheros wifi card which has sharing enabled. OS is W7. Hopefully someone can work out what is going on. Attached screenshots. TIA.

I'm no expert on networking, but I'll post this link in the hope it may help you.

Create Wireless Ad Hoc Network in Windows7 to Share Internet

Thanks but already tried that one. No signal! I just now tried again, and restarted the Connectify hotspot and that has no signal either. Resetting the adapter didn't fix it either, back to square one.