I believe you have to click it , like you would when downloading custom content. Find it in your downloads folder and click it [hope this helps]
Are you talking about the check mark box in the downloading area on sims? Yes I did do that and on the status it says installed (well it doesn't say that, but a blue arrow pointing down to a pack of cards with the green sims gem on it). When I start to play my game though none of the worlds appear. Like when I create a new game and have to pick a town none of those come up.
