Immersive Railroading + Traffic Control (Mods) incompatible?

I want to play the two Minecraft (1.12.2) Mods Immersive Railroading and Traffic Control in combination, but as soon as I right click this "Island Shunt" (for automated level crossings) my game crashes. I have no other mods installed otherwise. I saw many videos in which both mods worked together, including the automatic level crossings. I also installed the latest versions. Does anyone know why that is?

I have the same problem, I'm assuming an internal fault in the mod…