Sims 3 supernatural will not install properly

I have tried installing my Sims 3 supernatural download from origins. It installs perfectly fine ( as far as I can tell), but then it doesn't show up on my launcher. I have tried uninstalling and reinstalling my game and all my expansion packs in order 3 times now, and nothing seems to work. Not only is the supernatural game not installing but some of my other expansion packs wont show up o the game launcher after installing. I have plenty of space left on my Mac. And have had no problems installing before buying this expansion pack. Does anyone have a solution?