file. case in point almost all loco's under C:\Program Files\Steam\SteamApps\common\RailWorks\Assets\Kuju\RailSimulatorUS\RailVehicles\Diesel\ with a fresh install will be missing most of the files.
look under C:\Program Files\Steam\SteamApps\common\RailWorks\Assets\Kuju\RailSimulatorUS\RailsimulatorUSAssets.ap.
this .ap file can be opened with 7zip, we have been warned
