Just a regular wall, I wanted to add a third floor to an existing house. The walls on that house, are fine, however if I copy one of the rooms in the house, and put it down, those walls become invisible and the things uve hung on the wall are just hanging in mid air. Ive tried walls up, cutaway, and down, and as I said I have tried a completely fresh game. Ive tried different lots and just now ive updated my driver, updated windows and restarted my pc. Its only happening since I decided to play yesterday and updated to the latest patch. Im about to panic.