I also get some problems when trying to initialize mobile hotspot.

If I am connected to 3g when te app starts it says that the connection failed, and then disconnects and reconnects again, but then the mobile network created is not visible!

I once did exit the program without stopping the service and now the own created wifi conneciton is always there, which does not make a lot of sense if you ask me.

And overall, it is a great up when it works, but it seems pretty random. I mean, there is not an algorithm to make it work, it seems in my experience to be a trial/error process.