I created several projects in NeroVision, each of which contains chapters created manually, in (menu) Layout 13 (4 columns and 3 rows= 12 chapter buttons per page).  When I burnt them, I found a uniform bug.

    Whenever the menu page number is below 2, everything is OK; however, if it’s 3 pages (and more?), errors would occur when played through a home DVD player, Windows Media Player, or the Nero Showtime--although the problem won’t show in the NeroVision preview yet.  

    Basically, the chapter buttons on the Page 1, along with the left/right arrows at the bottom of the page are fully functional.  Once you move the Page 2, the arrows stop working.  Clicking or choosing the left arrow would make Square 18 (Square 6 of Page 2) flash briefly, which lead me to try the first five buttons (13 through 17, or 1 through 5 of the curent page) on Page 2. To my horror, each would bring on the CORRESPONDING chapter of Page 3 (25-29, or 1 through 5 of that page).  As for the rest of the chapters on Page 2 (18 through 24), they simply don’t work at all!  So, you can not move to Page 3 at all, and you can move to its chapter buttons only by choosing the wrong ones--those on Page 2!

    Help from anybody!  Thanks.

Thanks for trying to help, TankKiller.