@Jenngnome: I still have those sets. Are you sure your sets are still properly installed ? See, you need to have the Set object installed in order for them to show up. So try reinstalling one of the sets and see if it then shows up. Don't bother about the message that it's already installed.
@applefeather2: Please answer the questions in the second post
@Rygel_n: Please answer the questions in the second post
@userkitty1969: Try factory reset described on the first post or post in the tech forum
@seazoo, DamianEagle: Which world are you playing ? Someone reported that you can't use the rabbitholes anymore if they are too close to the edge of the lot. Try moving the bookstore back a bit and see if it works then.