I tried to install this mod with the SUPERSONIC High Speed Train mod and the headless server seems to run fine, but with the client I get the following error message on startup:

Error loading mods
Failed to load mods: File not found: FastGate/graphics/hr-gate-horizontal-left-png

Mods to be disabled:
- FastGate (1.0.1)

I just fix that, does it work for you ?

(Don't forget to update the mod)

Unfortunately it doesn't work yet.
The error message simply changed to hr-gate-horizontal-right.png
(I did the updated to version 1.0.2)

I re-fix that, does it work for you now?
Sorry for that, but launch high resolution mode on my potato pc is a bit laggy...

Edit i test so it should work

I can confirm. It's working now.
Thanks for the quick fix :)

thanks, now it runs.