The only trains that work in Trainz 12 are the Pre-GOH R46 and the Low-V Work Car. Auran has to update them all, but have only gotten to these two. The same goes for Trainz Mac.
All the routes work in Trainz 12, if there are any. It is really hard to find them. Try searching U, X, Y on the DLS. That is probably one of the best ones around.