I successfully created two DVDs. One was with MemoriesToTV and one was done through Photex PhotoShow. These are about 20 minute DVDs slideshows. When I try to "copy" them I have had a lot of problems using "copy DVD" in both Roxio and Nero. I have two burners in two different computers and have had the same problems with both. In my Nero/Plextor setup I try to "copy", putting the "source (created DVD) in my DVD Rom. Then I put a blank DVD in the burner and it keeps giving me the warning that I have placed an "empty" disc in the burner. I am new to this process and would like to know what I am doing wrong. Also, when I tried to use my other computer, Roxio/Lite-On burner, I was able to make one successful "copy". So I burned 4 more copies thinking I was OK. When we reviewed the copies they all had an assortment of errors and flaws and skipped frames and skipped music. Very frustrating. Any thoughts?