Magic World building error/bug

Hi

Hoped someone here might be able to help me as I've trawled the internet in search of a fix for this to no avail. Basically, I got my Sim to become an infallably good witch, and decided would like to go to magic world to the palace of neverending light. When I did this however, the building was incorrect (I have some pictures but not sure how to attach here). Now I know the building is incorrect because I've been there when I played the game on another laptop. Since installing the games on my new laptop however (which is Windows 8 if that's at all significant?) this element has not been behaving as expected. Rather than being the white palace it's a row of shops...very odd I know. The same is true of the evil witches palace. Instead of a large black palace, its a small two story house...Any ideas what has caused this issue and how to fix it?

Thanks,

K