Hi All I wish to thank the forum as I was able to solve my problem by searching previous answers after getting a faint hint of this forum from a Google search. After receiving the above message on replaying my very first rip/burn attempt, I changed from TDK DVD-RW 2x to TDK DVD-R 4x and the copy was fine - replayable on every DVD player I could find. However what tricked me, (and doesnt seem to have been covered here) was that the first 'faulty' DVD-RW actually replayed OK on someone else's new eMac even though it wouldn't replay on the computer that created it. So it appears that some 10.3.4 machines don't mind -RW media. But, of course, if you record onto -R media then you should not have a problem. Hope that this helps someone.