I used the lastest version of Nero to burn the disc. I know that my player supports DVD +R as a friend has played a DVD +R movie on my player.
The differences between his setup and mine are the burner and the particular type of medias.
I will try to see if any of my friends players can play the disc that dont work on mine. Will report back to you later.
Thanks for the replys so far - any other ideas are more than welcome.