The installer for those respective routes might have selected your C:\Program Files\BVE\ as your directory (unless your openBVE folder is actually in the bve folder). Make sure that your openBVE folder goes like this in anyplace openbve\railway\ and thenthere are three folders-route, sound, and object. For a route like the F train, u also need the Octavia objects folder so make sure to download that under dependencies and make
sure that the objects are in the right place. To make sure, load the route, and then click show issues. If an object(s) is not found, that
means your objects are not in the right place (the error message says
file:asldkjasldjasladjalsdja.b3d not found in askdjlaskjdkladjal;sdajal <---- that should be
the right directory.