If you are having issues with Kaiserreich that you can't pin down, it may be worth doing a clean install of both Hearts of Iron 4 and Kaiserreich.
- For the love of all that is holy please use a legal copy of HOI4
- Ensure you aren’t on any beta branches of HOI4
- Delete HOI4 in steam
- Go to your HOI4 folder (normally C:\Steam\steamapps\common\Hearts of Iron IV)
- Delete folder "Hearts of Iron IV"
- Go to C:\Users\NAME\Documents\Paradox Interactive\Hearts of Iron IV
- Delete everything that isn't a save game
- Reinstall HOI4
- Wait for Kaiserreich to download
- Make sure you play with no other mods (music mods aside)
Note: Running the game in admin mode may help if you are still having issues
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