GRRR ORIGIN! Why on earth did it update my Sims 3 to 1.69 when I have it in settings for it not to update my games? Fortunately it's an easy fix, just uninstall and then reinstall the base game then apply the 1.67 patch, but that shouldn't happen at all.
It's annoying because I can't play Sims 4 without Origin, but apparently I can't play Sims 3 with it.