Since the January 2025 patch it has not been possible to add a copy of the GraphicsRules.sgr file to the ConfigOverride folder in Electronic Arts > The Sims 4 (for ConfigOverride folder explanation see this post). Doesn’t matter if it’s a straight copy of the installation file or an edited version to tweak your in-game graphics, the game simply won’t launch and throws the following error:

This is only applicable to the GraphicsRules.sgr file. Having a copy of the GraphicsCards.sgr file and/or a copy of the Default.ini file is fine and causes no issues.
There is an easy workaround for this issue if you want to tweak the GraphicsRules.sgr file, simply edit the original file in The Sims 4.app > Contents > Resources. If you want to subsequently go back to the default file the game creates all you have to do is a game repair in EA App and it overwrites your edited file with the vanilla installation file.
Edit 29/05/25 – Thanks to user karoschmitz who has identified it is related to the Ts4CommonRules.sgr file also in the The Sims 4.app > Contents > Resources folder. If you place a copy of the Ts4CommonRules.sgr file in the ConfigOverride folder alongside the GraphicsRules.sgr file you can once again edit the file. Or open the GraphicsRules.sgr file and edit out the third line – include "Ts4CommonRules.sgr"




