The mods text is broken. For example the menu that pops up at the start of a game has the title "acot_mod_options.0.name". Description says "acot_mod_options.0.desc.a". The both options to pick are "acot_mod_options.0.a" and "acot_mod_options.0.b".

Version is 3.8.4 (3f4d).
Installed Mods: 1. Gigastructures, 2. ACOT, 3. UI Overhaul Dynamic


FIX:
Search for an ACOT loc mod or change game language to english