Oh dear, I just spend a quarter of an hour connecting waggions to my lco and wondeirng why it did not go and instead I had that red Brake Pipe lamp blinking. I needed to go to youtube and get rmeinde dof what I just had forgotten this time: that it is not enough to link the coupling and then the brake pipes (yes, in VR you even have to kneel down and bend your back to reach those parts...), no Sir - you of course also have to open the brake pipes on both ends...
I jumped that. Too much calcium in my neural network, I suppose.
Here are six developer'S videos on how the current status of the sim came to be, named "Derail Valley Overhauled". The next status in spring/summer will be "Simulator Module". Misleading terminology, but thats how it is.