Crashing

I have loved this game since i installed it on my iPod 2g years ago, currently i have an iPhone 5 and everything about the game is working fine except at random places it just sends we back to a check point for no reason. Some times Im in the air and some times Im just on a flat surface. This means i can get gold cause i keep "dying" for no reason. This is really annoying and Im wondering if anyone else has this problem

Joey Halleran about Jet Car Stunts, v1.5.0