TTR used to work on my 1.1.3 jb iPod touch, but recently it does not work. After I select a song it just shows the first few stars of the song and they don't move. All of my other games work so I don't know what the problem is. I have deleted TTR and reinstalled it and reinstalled installer and it still does not work. What's the problem? Do I have to rejailbreak my iPod?