I'm currently trying to get into this game. I made several attempts already (still practicing though) but ever now and then i seem to encounter a freeze after beating the Stage 1 Boss. I'm not sure what's the reason for that but it appears most of the time i was using Bob. Is there anything i need to avoid to make it happen? It doesn't happen often but it'S annoying to have to restart the game and run Stage 1 again.