I have years downloading and burning all kind of junk from the Internet and I just have problems with the memorex dvd those are the worse and cheap media in the market ,and use the real DVD Decrypter when the GREAT and the only one Lightning UK was around,I used MagIso,UltraIso,Alcohol, and a lot of crap ,and like a month I download an burn other disk for the 80 update in a Philip and TDKs media and no problems at all ,I believe is nothing related to the media or the software,is a file missing or something dvd player read it but don't understand or is missing a file to keep working ,if wa