Many problems can be pinpointed on cc or corruption in your user data. There’s an easy way to reset your game to factory settings without going through the ordeal of reinstalling the whole thing. Path can be different depending on your OS: Make a backup of  theSims3 folder in Documents\ElectronicArts to an external drive. Rename your theSims3 folder in Documents\ElectronicArts to Sims3_Backup Start the game or the launcher (All your save games will be gone, your options will be reset to factory settings and all your store cc will be gone. Not to worry, it’s all still there in that…