My steam is set to English, the game is set to English, the Operating System is in German.
I use Crusade and I use the Crusade Mod folder. The mods themselves (the downloaded, too) work. The text.xml files simply don't and in the game I always get these xxx_Name and xxx_ShortDec fragments instead of the actual text. That is the part that is so odd for me. All the changes work (i.e. New Colonisation Events, Different Anomalies, new Improvements).
I didn't change anything for the downloaded mods, I just copied them into the mod folder.
Edit: The TechTreeViewer displays everything correctly, but GalCiv3 does its own thing. Are there any config files I might need to delete that are ignored my "validate game files"?