Cant spawn modded locomotives

My first time trying to play with mods, so im probably just oblivious to the answer but google doesn't seem to help. I've downloaded vortex and UMM, neither of them say there's a conflict with my mods or they need any updates.

But when i load up the game with the mods the train spawner plus mod is flagged for errors and I'm not sure why. All my other mods seem to work just fine, its only the train spawner plus that doesn't want to work.

Any and all advice is much appreciated!

https://preview.redd.it/esblr0ew86jh1.png?width=1288&format=png&auto=webp&s=381207c2d74e7befd0477f4cfcc3c10da23032ea