Desmume | Pokemon games

First off I am running 1.0.0.2 on iOS. I’m not sure if it’s a game issue or a core issue but Pokemon heartgold/soulsilver will go to a black screen after pressing start on the intro screen. Then with Pokemon black and white as soon as the game goes to enter your house I get an error message saying to power off. If anyone has a work around great. If not hopefully the devs can look into it. I’m sure Pokemon games are a sought after experience.