Currently Being ModeratedJun 17, 2013 7:16 AM (in response to Wryter)
First, layer breakpoints can be a little difficult in dvdsp. I spent a week banging my head against the wall when I couldn't author a dual layer dvd with an assigned breakpoint. Turned out the dvdsp project had gotten corrupted. When I rebuilt it, everything was fine. If you assign a chapter marker as a breakpoint, DVDSP will give you an error message when you do the build if there's a problem.
Also, I hope you realize that dual layer dvd's are only work properly if they're replicated. If you burn a dual layer dvd you may have problems getting smooth playback. They're really only useful to proof the dvd before sending out for making a glass master and replicating.
Not sure exactly how you're working, but you might try doing this creating simple buttons in dvdsp and see if that works correctly. If it does there may be a problem with your workflow. You might also consider resetting your dvdsp preferences.