menu control doesn`t work on Studio 10 Plus

Hello!

I have created a project in Pinnacle Studio 9 SE, then I decided to buy
Pinnacle Studio 10 Plus 20th anniversay edition. When I opened the project,
it was changed to Pinnacle Studio 10 Plus format.
It is my first project "created"/modified in Pinnacle Studio 10. I don`t
know why but after burning a DVD this DVD doesn`t work on my DVD player
connected to LCD tv set. Navigation doesn`t work. I don`t know why because I
did the same steps on timeline as on Pinnacle Studio 9 SE edition that is I
have created chapters and returning points to the menu, but it doesn`t work.
I don`t know why. Could you help me what I did wrong or maybe it is internal
Pinnacle Studio 10 error? I also checked "return afer finished chapter"
checkbox. I have Polish version of Pinnacle Studio 10 PLUS.

Thank you in advance
Marcin

MZ