Quote - Hi,

I have linked to screenshots showing the setup and the render, and the light is not even hitting the cube in front of the train.

Thanks
Jon
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You have the actual light source itself stuffed inside a cube.  The light source needs to be clear of any obstructions.  Try shrinking the light source to get it out of that cube and /or moving it back out of the cube.  The little pyramid si the light source, the light cone is the wireframe guide you get with a spotlight light that helps you see where it will hit.