I'm playing sims 3 again and all of a sudden I can't buy or sell anything at Alister's Elixirs shop. It just keeps resetting my sim when I try. I think I had this issue once before, but unable to fix now. I've demolished and placed a new shop. I've deleted the register and put a new Elixir Register there. I don't have the option to cancel previous consignments with my sim... so not sure what to do now. Any help would be appreciated. thanks

are you installing any mod related to Elixir consignment register? If you have ErrorTrap by chance, it might produce a script log when your sim got reset.

I had a similar issue once, and that was because of the "More Alchemy Potions+Potions for Pets" mod and once I removed it the problem went away.