[ubuntu] DeVeDe problems on ubuntu 12.04. any help appreciated

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http://ubuntuforums.org – im having trouble with DeVeDe. its only creating and converting one movie to an iso image ready to be burned. when i want to create multiple movies to one dvd disk. im trying to create a DVD with four different movie titles. i also make sure i click the button to make sure it all fits to a 4.7GB DVD disk. ive used devede many times before, on my old laptop. with no significant problems. but each time i try to create a DVD using devede containing more than one movie file. it only converts and creates the first movie file i add. and just forgets about the other 3 movie files i have carefully (Hardware)