Script mods that alter how the game starts up can cause this, particularly after a patch.
folder, resetting the user folder, or performing a game repair through the EA App or Steam. For more details, visit Very Frustrated-Error processing | EA Forums - 11844103
This error typically occurs because the configuration file that stores your graphics and gameplay settings has become corrupted. Deleting it forces the game to generate a fresh, clean file.
If the error persists without mods, the configuration script files are either corrupted or have incorrect permissions. Script mods that alter how the game starts
Whether you are a casual player who just installed a new game update or a power-user tweaking graphics for realistic lighting, this troubleshooting guide covers everything you need to get your game up and running again. Why This Error Happens
Move these files out of the Mods folder and paste them into a temporary folder on your Desktop. Try launching the game.
OneDrive often locks or syncs the Documents\Electronic Arts\The Sims 4 folder, causing "exclusive access" errors. Deleting it forces the game to generate a fresh, clean file
Don't panic—this guide will walk you through the troubleshooting steps to get your game running again. What Causes the "Startup Configuration Script" Error?
There was an error processing the startup configuration script
If you have used custom configuration tools, installed graphic rule overrides, or used specific mods, they might be stored in a special override folder. Navigate to Documents > Electronic Arts > The Sims 4 . Look for a folder named ConfigOverride . Why This Error Happens Move these files out
Before we fix it, let’s decode the jargon. When The Sims 4 launches, it runs a "configuration script" (usually Default.ini or GraphicsCards.sgr ) to tell your computer how to run the game—what resolution to use, which graphics card to prioritize, and which folders to access.
Temporary files stored by the game can become corrupted and conflict with the launch sequence.
If deleting overrides doesn't work, a file inside your core installation directory is likely broken or missing. Running a system verification scan will replace the corrupted script.
How to Fix The Sims 4 "Unable to Start: There Was an Error Processing the Startup Configuration Script"