I have been writing dvd-r using - dvd encrypter, ifoedit, and writing with prassi primo. The dvd's work perfectly in my samsung 511, and various other standalones i have tested , except for the sony dav s800 This is really bugging me as to why it wont recognise the dvd-r (TDK), i have tried other media brands with no success, has anyone any tips????

thanks in advance!!!