iPod touch Apps quiting

[rendez2k]

My friend has just bought an iPod touch 3rd gen. Hes signed up for an iTunes account and download some apps which worked. He then added his music library and updated to 3.1.2. Since then, every app quits )except for the built in ones) even after doing a full restore. The odd thing is, if I sign in with my account and download an app, they work! Any ideas?!

 

[Barbie]

same situation has happened to me. also, music bought & protected on the itunes store doesn't work on ipod, but does on the computer

full restore does nothing.



edit:: after restoring and choosing not to use the backup file sorts the problem.