Multiplayer via WIFI crashes

Random crash happens every time I am playing on wifi. My kid and I both have nextbook 7" tablets, 1ghz processor w/ 8gb internal memory, 1gb ddr, and android 4.0

I can play single player all day long with no crash.. Its when we are playing together that the game freezes and gives me the "game is not responding" menu with the choice to ignore or quit.

Too lame for words, please fix this. I never had a problem with 0.6.1

Is there a way I can roll back the updates to 0.6.1, i am tired of not being able to use this game

Thanks