those lots are really nice lewis. BTW i finally completed my first split-level house and guess what happened: my game crashed for no reason at all when i was trying to save it!! and the house was really nice!! i built and decorated the whole thing and saved it at the very end [i usually save every 5-10 mins or so] and my game crashed on me [that NEVER happens]. ugh!! i was so upset.
Maybe you are using some corrupted object...