When I open my itunes it gets stuck.I bought this new ipod touch which told me to update to itunes 10.5 or above.so i updated to the latest 10.6.They asked for my apple id and password.I typed it in and suddenly i tunes crashed.Now i cant acces itunes as it crashes all the time.I reinstalled it and it still doesnt work.Whenever i play some song on itunes the song plays but its like its crashed and i cant do anything on it. Please help!