I'd post this in the general chat, but for some reason I can't post on it (I can post on other WS items but none of your own, chaffyexpert).
The mod (For me at least) deletes several government reforms, making some tiers useless as they have no reforms to choose. Deleting the reforms .txt file in this mod clears the issue up, but I figured I'd let you know. Tried this with only ET and FotE ET Edition enabled, still had the issue.
Cheers!