I-pod classic 120GB will not sync with my i tunes errors reported 1415, 1517, 1418, 1428, 1429, 1430, 1436 or 1439, completely unsure what any this means? Is my I-pod for the bin seems strange as its only about 2 years old? It finds it very difficult to sync with any of my tunes at all, can anyone help with what to do please. Thanks