Sims

@EmikoKiichigo, while EA allows Mods and Custom Content (CC) to be used in the game, they do not support Mods and CC … it is impossible for them to make a game around 3rd party additions!  Mods and CC change the game in unpredictable ways.  They actually require a lot of upkeep to keep them working with the game. 😞 

Every time EA updates the game in a patch, there is a chance that any Mod or CC can become outdated and not work properly anymore, or even cause strange problems in your game.  Most reputable creators of Mods and CC will update their items after EA patches the game.  You have to get the updated version of your Mods and CC each time the Mod/CC creators release them.
So, if your game acts weird, especially after EA patches the game, you need to do the following to see which Mod/CC item is causing the problem so you can remove it and (hopefully) replace it with a new one. 

Please do all of the following:

1) Move the Mods Folder to your desktop

2) Delete localthumbcache.package file in the game folder.

3) Fix you game in Origin by logging in and go to Library, then right-click on The Sims 4 and choose the "Repair Game" option from the list.  Wait until Origin finishes repairing all your packs and not just the base game.

4) Now, when you turn on your game again, it will create a new mods folder that will be empty.  Check to see if your game is now working without mods/CC.

5) Now you can try adding back items from your Mods folder one at a time checking your game each time to see which item is causing your game to not work properly.  If you have a lot of items, you can try the 50/50 Method. 

 You should try these steps any time you have problems in your game to rule out CC/Mods problems.  It is the responsibility of the Mods/CC creators to update their items anytime EA releases a patch/update, and it is the responsibility of the people who use Mods/CC to make sure they are using the most recent version. 

I used to use Mods and CC in TS2 and TS3, but had some bad problems with them in TS3 so I removed all of them and never used them again, in either TS3 or TS4!  I found out that I was too lazy to do all the maintenance and upkeep required for having Mods/CC. 😳😃  I do not miss the headaches they can cause!

Also, some of the problems in the game could be due to Bugs in the actual game.  These get fixed from time to time when EA patches the game.  But in order to figure out if your problem is a Bug or is caused by an outdated Mod or CC item, you will have to do all of the above steps in order to rule out any Mod/CC conflicts. 😇

Please update us on if the steps above helped your problem! 😇