NS platforms have no passengers, doors won't open on trains.
If you are using a route that makes use of the ChrisTrains NS platforms, and you notice that there are no passengers on the platforms and/or the doors of your train do not open, please make sure to enable the 'DTG' assets for the route. You can do this by editing the route, then choosing the content creator box and at the top right of the screen, look for 'DTG' and enable the 'Academy' checkboxes like this: