Downloaded Apps no longer working? How do I re-download?

[KegMaster]

Why all of a sudden did my downloaded applications stop working. All the default (built-in) apps work fine, but the ones I added just stopped. If you click on MLB for example, it pauses and goes right back to the home screen. Same with Facebook, Myspace, MonkeyBall, etc.

FYI- Got a 3G

 

[Brett3rThanU]

Same thing happened with AIM for me. I just deleted it from iTunes and synced, it then deleted it from my phone. Redowmload it and you should be set, they shouldn't charge you again.

 

[WannaApple?]

Try to restart first before re-downloading. My Super Monkey Ball wouldnt start last night either..kept getting the main screen, then just defaulting back to the phone's home screen. I restarted the phone and it worked fine.