[MOD RELATED] SIMS WON'T GO TO THE TOILET

Try resetting your user files as described in the factory reset described in this post: http://answers.ea.com/t5/The-Sims-4/FAQ-Troubleshooting-Steps-amp-Known-Issues/m-p/3621199

You won't loose anything. Just make sure to not delete any files  and make a backup.

Try on a new game with nothing added back first (start new game). If it works, put back your save game and try again. If it still works, you can start putting stuff back.

• Options.ini (or just re-set all your settings manually)
• Tray Folder
• Screenshots/Videos/Custom music
• Rest of the save games (leave out slot_00000001.save which is the autosave)
• Custom content like clothing, hair, skins, make up ....
• Mods (one by one, making sure they all still work)

The rest does not need putting back, cause they are mostly cache files that recreate or log files that are not needed for the game. 

Most of the time its not mods that wreck the game they actually make it much more enjoyable to play the problem is they have to be updated because we get constant updates for the game to fix their bugs and glitches which shouldn't be there in the first place, but hey whats new this game has always had problems since day one and will continue because of the idiots they have working for them.

@zigzog45

Everyone plays the game differently so what may be enjoyable for one person may be horrible for another, not everyone uses Mods. Using Mods is always at the risk of de-stabilising the game when a patch is released. It has always been like that ever since Modders started, er, modding.

But if the mods you use haven't been updated simply play without them until the creator updates them. The game is playable (albeit with some non-game breaking bugs) without Mods, just maybe not to your own personal style 🙂