I was really excited about these, since I live in Prague, but I am having trouble getting them to work. I extracted the files like it says in the instructions and also I tried extracting them to the plugins folder. I used the "block all Maxis buildings" mod and zoned some 2x3 high-density lots. (This means 3 deep and 2 wide, right? I tried 2 deep and 3 wide as well.) But nothing will grow. When I downloaded the file my computer used "Open Freely" instead of just bringing it up in my downloads folder like usually happens. I am not sure why or if this is the problem. If you have any advice I would appreciate it. Thanks for making buildings based on Prague - it is a wonderful city!