If Mansions & Gardens is your last EP, then there is a problem with the alignment of wall coverings on walls with non-standard heights. All that this means is that the downtown and residential lots may not appear as pictured in this thread. There is no known solution at this time. If you don't like the new look, feel free to change the wall coverings used. For more information, see:
http://www.modthesims.info/showpost...&postcount=2341