Thanks for the feedback and the great mod.
Yes, I have a lot of mods installed, but no train mods.
When I place the train on the track and then try to run it, a whitish band appears between it and the track, it makes something like a braking sound (whoosh), and it only moves a tiny bit. The steam locomotive works perfectly fine. There are no error messages.
I don't have "Space Age" installed.
You are going to have to step through and disable your mods to find out which one is creating this issue.
It all works on Base Factorio+ without Space Age too.
Cheers