Theme shouldn't cause any problems at all unless there is a themed apk I don't know about. And if your tethering turns on and then right back off again, try rebooting your phone. Usually that fixes it.
Sent from my TLS powered device
See I tried that as well, but it just wouldn't turn on even after a reboot. I don't think it has anything to do with the theme, but something in the Hotspot app that doesn't like the UI changes for some reason. Since I have slot 1 all good to go with everything running I am going to break into this a bit more tomorrow. Also noticed, not a big deal breaker, that when I opened up TIBU to restore backup it ask to enable Android Debug. So I go into Developer options as I always do and check it on. Go back and open TIBU and same message pops up. It is like it didn't sync the system that it was on. To get the message to stop I went into the app info of TIBU and cleared cache and data then reopened it. Will it be possible to add in the build prop for Debug to activate on bootup? Like I said not a deal breaker this thing rocks.