Can you try re-downloading the game? The archive might have become corrupted while downloading.
Also, the next beta will contain much more Pokémon, since you will spend a good amount of time in this forest:
The credits are, as usual, to be found in the credits.txt of my game. I'll reveal the full map when this deviation receives 100 favourites, then I'll know enough people acutally want to see the whole map. If you don't know what my dA account is, Google/Yahoo/Bing will help you ;)