I am having the exact same problem, did you ever find a solution?
[QUOTE=Betlou;2166522]I have tried 3 different burner software and the all say the same thing. that the dvd is invalid of not blank. I have a new package and have tried all of them and its the same, even tried another type of dvd. So I went to the properties of my dvd burner and it showed the disc totally blue and said not space left that I had used it all up. My slideshow software is “Memories on TV”, the other ones I have tried are “Nero burning rom” and “Record Now”. I am also using lightscribe and I can etch the pictures on the other side but it just won’t let me burn the video. Surely there is someway to clear the used up space. I just assumed when you burned a disc that all the info went on the disc I was not aware that it was taking up bytes in my harddrive. I have burned many, many disc. I am a sports photographer and I make dvds of football, basketball games and sell them to the parents.[/QUOTE]