Ubi updated the game, and now the language files are read from a separate patch. If you have an up to date legit version, you need to manually unpack patch and patch_chn, and add the languages folder from Redux, then repack these files. If you are using an offline "backup" of FC4, you're good to go.
Ay, I tried to install this and the game just CTDs during the startup loading screen. I'm assuming it's because of the patch thing that made it so I have to unpack patch and patch_chn, add the languages folder and repack. Here's the thing though - I have caveman brain and don't know how to do that. What should I do? 2b1af7f3a8