I don't have this problem with any other disc, which suggests it's an issue with the disc rather than my player, but after the logos, there's a language selection screen with the four options.
Whatever button I press on the remote, my player says that the operation is not supported.
If I use my PC, I can go direct to the film, and all is well with that, but has anyone else had this problem with the disc?
If not, what button did you press? Enter / Play / Menu / Root all tried here without success.