Scripts works in Simulator and Apple DVD player but not on TV

Question

I have a basic project with two different tracks.
The first one is video and audio. Plays "as is".
The second has video, two audio and one subtitle. Depending on which button, the second Track should be played with different audio and with/without subtitles.
(I use GPRM 1 to set the subs stream, GPRM 2 for the audio and GPRM 3 for menu button navigation).
On the second Track I have a pre-script that sets the streams depending on the value of GPRM 1 and 2.
Works fine in Simulator and in Apple DVD player, but not on the stand-alone player.
Any idea what might be the issue here?
in short:
Button 1: Play Track 1 "as is" (audio 1, no subs)
Button 2: Play Track 2, audio 1, subs on
Button 3: Play Track 2, audio 2, subs off
Button 4: Play Track 2, "as is" (audio 1, subs off)
Menu button and End Jump should go to the corresponding menu button.
Many thanks for your help.

Answer 1

It is part personal preference, part artistic, part what makes the user experience the best so there may not be one "right" answer and I have often made menus one way than changed them when viewing the DVD for something that seemed to work better.
Looking at you description I started playing with some ideas in my head and started typing them, then changed what I was writing
It sounds like you want chapter selections for both track 1 and track 2? If so it may make sense to have the initial menu have Track 1 and Track 2 buttons which then link to sub menus where there is "Play All," selections for each section of each movie and one last button for the preferences.
Alternatively you could also place the preferences selection button on the main menu, though since Track 1 does not sound like it really has preferences you need to make sure that users do not become confused and think they have turned something on/off and are not seeing these options when they thought they selected them when they play back Track 1.
Also with 6 to 8 chapter markers you may be getting close to the point where scripting could make it easier if your selections are just to play the sections - in other words for track 2 four stories take care of the combinations Audio 1/Sub Off, Audio 1 Subs On, Audio 2 Subs Off, Audio 2 Sub On. If the chapter selection starts the track a scene then plays through you can target chapter markers in the story so 4 stories takes care of it. If you are just playing sections you would need 4 x 6 or 8 chapters - 24 or 32 stories roughly. But it is actually fairly quick to do - just set up the intial Play All with all subtitles and audio selections unchecked except for "1" then copy from there. Probably should take under 10-15 minutes or so
Put a real quick thing together for a quick view of the tracks. I can flesh it out more if you like.
http://www.dvdstepbystep.com/081107Sub.dmg
The main menu will be the title menu, then the sub-menus (including the set up menus) can be placed in the same VTS as the applicable tracks which can help a bit with DVD performance speed. Since there is 6 to 8 chapter markers on a track each of the main sub-menus would have 8-10 buttons which can work in the design.