While trying to copy an already pre-burned disk (that plays ok on my stand-alone), DVD-Decrypter burned the contents to the HD ok. Trying to burn back onto a DVD gave an error message the gist of which is as follows: I/O Error! Device: Pioneer... etc Interpretation: send cue sheet ...some long code numbers Interpretation:cannot write medium-incompatible format clicking ok produced the message- Failed to send cue sheet! Examination of the disk shows that as well as containing the usual audio_ts and video_ts folders, there is also a ULEADDMF folder, containing the files DMF2.dwz (51kb) and ME_00_00.ufo (654kb). I'm assuming this folder is somehow preventing a correct burn. I've also tried just burning the video_ts files using nero but that also produced a multitude of errors. Any ideas what I need to do to copy this disk??