Well, you were right.
1. With AI Scanner enabled (default), playing the ripped file from HDD at scene 15 to 16 transition jumped back to the main menu.
2. There are 29 scenes in the movie, so I would guess that the transition is at the midpoint for the layer break, but I don't know how to confirm that (it occurs at 1hour 02 minutes, the movie is 1hour 35 minutes plus extras).
I posted earlier the AnyDVD status report incorrectly (the first one was actually for the mounted image
- this is the actual original disk report with scanner enabled:
Media is a DVD.
Booktype: dvd-rom (version 1), Layers: 2 (opposite)
Size of first Layer: 1968512 sectors (3844 MBytes)
Total size: 3933163 sectors (7681 MBytes)
Video DVD (or CD) label: MEET_THE_ROBINSONS_US
Media is CSS protected!
Video Standard: NTSC
Media is locked to region(s): 1!
Warning: .bup file location is wrong, .bup processing disabled!
RCE protection not found.
Found & removed structural copy protection!
Found & removed invalid cell pieces!
Found & removed bogus title set(s)!
Found & removed invalid program from program chain!
UDF filesystem patched!
Autorun not found on Video DVD.
Found & removed 4 potential bad sector protections!
Do you want me to do anything else?