i built my own way to load game and show route/train. my way is very simple.
make sure it has railway folder in the front.
make sure it has object, route, sound in the railway's folder
object folder is used for picture, animated, b3d, etc.
route folder is used for ".RW" or ".csv" to read them in the object to loading up those object to be appear in the game.
Example:
What dont you understand why some objects dont loading up in the game?
because....
Route in game is reading those object as redirect to that folder.
i suggest u to download all routes and put them together. it'll be work for you.