iPhone 4s 3rd Party Apps not working
Thanks for the suggestions but here is the answer:


  The reason this happens is because every time a downloaded app is opened it checks for your itunes password for validation that you are authorized to open that app (as it may contain personal info). From time to time the iphone “forgets” your itunes password. You can fix the missing password by syncing the iphone with itunes or downloading an app from the app store and entering your password that way.


I am up and running with all my 3rd party apps now.