I just upgraded to 4.8 and when i opened it up again i started playing my music and after about 10 mins it unexpectedly quits so i reopen it and it oes it again and then a 3rd time. After i restarted it still did it and everytime i reopen iTunes it brings up that license agreement thing like i never magaed to open it the first time. Also when i expand the window so i can change playlists i get the spinning beach ball and then iTunes goes unresponsive but the music keeps playing. How would i go about reverting back to my old versino of iTunes?