Can't get the elixir store to sell me anything

I had the same problem, but I fixed it. It turns out an outdated "faster skills" mod was causing the problem. When I removed the mod, the elixir store began working again.

Custom Sims 3 now has new mods that have been updated for Supernatural, by the way. They just listed new mods for faster skill gain and cheap lifetime rewards. http://customsims3.com/forums/forum-34.html