UNU Streamliner B Unit and Trains like that dont work when you want to place it in multiplayer there come a chat message: Error rolling stock does not exist on the server. can not place. ensure you have installed the resource pack in the servers confic/immersiverailroading folder. but in the single player dont exist that too but there it works.

This is not an Immersive Vehicles error. Trains are part of Immersive Railroading.