I've had the same problem as you. I have ten expansion packs. I have four, including the base game, installed on my computer and then the rest are installed through Origin. I have never had any problems before now. All of a sudden, only the ones installed on my computer are showing up in the Sims 3 launcher. I know the obvious answer seems to just download the rest onto my computer and forget about Origin, but since I bought them digitally through Amazon, it won't let me download some of them on my computer and force me to keep them on Origin. I've reinstalled my base game and the expansion packs (which took all day), and I've repaired the game multiple times. Sometimes the packs pop up and sometimes they don't. Does anyone know a way I could fix this glitch and keep my packs on at all times?