I am having the same problem. I can play a video I just created with a a non linear system called Casablanca on windows media player but not with this program.
I can, however, play other videos on windvd10 made simiarly.
I get a green screen with no video/sound is ok when playing Dolphins, a National Geographic movie.
Green screen only on a Seinfeld tv disc.
Green screen for Finding Nemo and the list goes on and on......