im having the same problem i have over 600 dvd movies and they all play fine in my dvd player for my tv with no problem, but when i put the dvd disc into my pc dvd player, it doesnt see it at all, i have a pioneer minus dvd player, i tried all kind of dvd disc every kind even plus, its weird before i can only burn with plus and my dvd player is a minus, but now i can only burn with memorex minus, if any 1 can help me it would be very appreciated thank you