I have done many rips and all play fine on both my set top boxes .Mostly burnt using Nero & Vob but when playing back on either laptop or computer keep getting disc errors on playback using powerDvd.Is there a difference in how they should be burnt or is it the dvd-roms are choosy about what disc they play.Discs are being burnt as doom9 tutorials & Iam using a selection of dear Dvd-r discs ,Pioneer 104 burner