2 days ago · How to Fix Sims 4 Tray Importer not working. The Sims 4 Tray Importer may not work due to the following issues: If you find the Sims 4 Tray Importer is not able to show Custom Content. Then make sure that Custom content is turned on in the game. The main reason for that is whenever you install a patch the Custom Content gets disabled. Open up the Downloads folder and then right-click on the content you've just downloaded. If you're using WinRar, you'll see an icon that looks like a stack of books. Click on the option that says, "Extract to (mod name)". The file will then extract into a folder. Installing Mods in The Sims 4 The process for downloading both CC and Mods is the same, so we will cover them both at once. They are installed in Documents/Electronic Arts/The Sims 4/Mods. Open Windows Explorer or Finder on Mac. Click your Documents folder, Electronic Arts, then The Sims 4. If you have trouble finding it, look for the Users folder on C:, click the User of the PC (in my case, Carl) then proceed to Documents (or My Documents) and go from there.