Start the 'problem game' to try replicating the issue again. Repair Game: Click Sims 4 > Manage > Repair. Step 1: Move the Mods folder to the desktop, Delete Game Cache Files and delete the localthumbcache.package file from The Sims 4 folder, in the Documents folder. EA/Maxis aren't responsible for broken mods/cc.
If the game works when the Mods folder is removed, then one or more of the mods and/or custom content has become outdated and will need to be removed or replaced. (Thank you Play for sharing these tips!!) *Note:* Custom content can become outdated with most new game patches. How-To: Fix Problems with Mods/CC Quick Links Index: - Steps to Take to Fix Issues with Mods/CC - How to Move the Mods Folder to Desktop - Batch File Fix - Custom Content or Mods Don't Show Up In-Game - Reset the Sims 4 Folder - CC Hair Issue - Streaks in Hair - More Information Steps to Fix Issues with Mods/CC: Here are some steps to take if you've got mods and/or custom content in your game and are having problems with your game.