There is a long-standing bug where if you load translation files in via a client mod, the translation files work, but every other translation file in the game breaks. I make a conscious effort to obtain translations for all of my mods, and it's a source of endless frustration that while I can do this for server mods, I cannot for my client mods. This is especially bad for anything that wants to touch Galactic War as it doesn't allow for server mods, so you're left with a bunch of untranslated text.