The problem is due to something in your previously saved games or with content you've downloaded from the gallery. The game will start without mods and without any of your saved content: If the game runs normally
Use the following steps for Windows or Mac to back up and reset your game. If The Sims 3 does not load for you, make sure you use The Sims 3 folder rather than the one marked for The Sims 4. NOTE: These steps also work for The Sims 3. Follow these steps to check for a corrupted save file or Gallery download in the Sims 4.
