actually, there's something about riddick - It has like an xbox game built in or something - I had to use my original m$ dash to play it.
It comes up with an option to either Load Demo Game or Load Movie - if you click movie, it tends to throw you back to your modded dash (or at least it did with dash2gam). I didn't feel like figuring it out, so I just disabled my chip, and it worked fine.
Although I did spend the extra cash on a DVD player 'kit', so it wasn't a problem for me.