Yeah, just revert the launcher. It's Beta for a reason. You should only use the beta if you want to play the new Zelda game, and a few tiny titles like that new Adventure Time game.
AKA, only use it if it's required to do what you want.
I DO want to play the new Zelda =). But anyways, I had no problem accessing past the first 2 times. I find hard to believe that the "beta" thing has anything to do with those crashes: if it worked flawlessly with 1.2, I'm sure they haven't touched it apart from the emuNAND thing.