Can't access the root menu in DVD Studio Pro 4

Hi there,

I am building my showreel using DVD Studio Pro 4, and after I build and test my DVD using the DVD player and the Video_TS file I can't access the Menu when playing any of the videos. If I press Title it goes back to the Menu, but if I press Menu it doesn't, the video continues to play.

I burned to DVD and tested in my DVD player and the same thing happens, once I play a video I can't get back to the Menu.

I have made DVDs before using DVD Studio Pro and its never been a problem. In fact when I test old projects they work fine so could anyone help?

I cleaned up my Destinations in Preferences, creating a seperate Build folder for everything to go into, so maybe I've left something out, or moved something I shouldn't.

Any help would be greatly appreciated!!

Thanks