In the generator, ensure you check the box for Special Transport DLC compatibility if you own it.

In the ETS2 Mod Manager, ensure the def file is loaded above the main ProMods assets, map, and model files to ensure it overrides default settings. Troubleshooting

if you are using other mods like RusMap.

for the full ProMods 2.63 package.

promods-def-st-v263.scs