2003 Honda with Alpine Navtech system built-in; DVD version 3.20AO constantly gives "Problem reading DVD, contact your dealer". Took car to dealer where they found no problem in unit and "thought" maybe the DVD was bad (its worked fine since new). They do not have a DVD to check if works and suggested I buy an updated DVD (they do not sell them). I removed DVD, checked it for errors, etc. on PC ... it appears fine and was easily read, returned to nav system ... problem still occurs. All else with system works (A/C, audio controls, info screens, etc.)

Does anyone have a clue to resolve without me having to spend $300 with Alpine on new disk just to test! I have tried in vain to find an answer ... no luck.

Thanks, Harold