just want to say / bring to attention, that you can crash your game, if you evolve a nincada. this happened to me in randomizer mode, i think the problem could be either, that the game crashes because it doesnt know where to put the second evolved pokemon if your party is full, or it is just a problem with the creation of a second pokemon upon evolution. i lost quite a bit of progress this way, and hope that the problem is fixed soon.