First run after update, breaks a lot of in-game items, but it you remove the non-steam mods, start the game, then re-install them they should work. Remember, Install one at a time, just in case one of them breaks. Non-Steam mods, go into "TheKillingAntidote/Content/Paks/~mods" if that doesn't work just put them in the "TheKillingAntidote/Content/Paks/" folder and remember to make a backup.

If you find a mod that breaks something in the game, just remove it or if it's a Workshp item, just unsubscribe to it and it will be removed.

ALWAYS REMEMBER TO MAKE A BACKUP.