So I have destroyed my first dual layer DVD :-( I did it like you wrote, when I created the ISO in PGCEdit, it showed me a table of possible layer breaks, I have chosen the first one, then it created the ISO, which I burned using IMGBurn, the writing finished successfully, but verification failed, I tried the DVD on my DVD player, and it freezes in that section.
What have I done wrong ? Or did I simply have "bad luck" ?

BTW I am using "seamless branching" in my project. How "seamless" will the transitions be if one scene is on layer 0, the second on layer1, the next on layer 0 , etc... ?