I'm having the same issue and I have tried multiple menus. I have disabled UAC and changed my windows startup to not load any startup items and I burned to a folder only and everything worked good but then I checked the box to burn to disk and it gets between 50 - 90 % and gives the error Burning Unsuccessful which naturally destroyed another DL DVD each time. I have successfully burned 1 DL DVD out of 5 tries. What else can I try? I have gone trough the preview mode and everything is perfect, music in the background, special effects between scenes, preview of Chapters appears to be fine. I am currently trying to burn another disk using the Sportsman DVD Menu that I dowloaded from your site. Keep your fingers crossed. I'm about to give up and just let Roxio create some duplicate copies of the 1 DVD that I finally got to work.