Rating: 2/5
Recommendation Try the troubleshooting steps above (especially removing mods/CC and clearing cache) and check community forums for specific fixes; however, be prepared for repeated attempts and consider waiting for an official patch if you prefer a stable, plug-and-play experience.
I encountered a persistent startup error in The Sims 4: "Unable to start. There was an error processing the startup configuration script (exclusive)." The message appears immediately when launching the game and prevents any play. After trying the usual fixes (repairing game files, running as administrator, disabling mods, and updating drivers), the error still occurred intermittently—sometimes the game launches after multiple attempts, other times it won't start at all.