Issues With Build/Buy Mode in Apartments

[Asleep]

I recently moved my Sim into an apartment I got from the Swap Shop, and whenever I enter Build or Buy mode, my game lock up when I try to go back into live mode. It's very frustrating, since I'd like to make changes to it.
Any ideas on how to fix it?

[skybaker]

How long you have waited? My game froze for few minutes (real time, not in the game) once returning form buy/build mode to live mode oftenly.