I searched through the threads on this topic already a bit, but didn't find much that was useful/applied to me.
I have a Droid Razr M running 4.1.2, which I just successfully rooted today. I installed the Wifi Tether TrevE Mod app today to try and tether my new Windows 8 tablet (Asus VivoTab Smart), and have so far not had any success. The wifi network is broadcasting from my phone, and my tablet picks it up, but only connects to the "limited" connectivity level, or depending on the settings in-app, won't connect at all. I've seen a few places that I might have to enable ad-hoc networking, which I haven't tried yet.
Does anyone have tips for the configuration settings I need for the app or for Win8 to make wifi tethering work?