Cannot load track!!

In my iPhone 5 when i try to load a track a message appear “Impossibile caricare la canzone” (“Cannot load track” I think is the correct translation from italian) and “The operation couldn’t be completed. Operation not permitted”.
'Til some days ago it worked fine. I don’t know if the problem comes with the latest iOS update (6.1.4 (10B350)). I tried several songs and to reinstall the app but nothing.
My iPad 3 with iOS 6.1.3 (10B329) works fine.

Hi Marcello,

Sorry to hear that. Can you please try to delete and re-sync or re-download the songs to your iPhone?