This is because you have to have a winzip program to decompress it before you put it in your game. Once you do this, you have to move the file you want to the proper folder... For example.. if it is homes you are downloading you would.. .... goto ...Nightlife, goto...TS Data, goto... Res, goto... Lot Templates and put file there.... once you extract the file BEHAND... it should work in the game. If it isn't homes you are downloading, examine what it is your are downloading and check out the files in the nightlife folder and find on that matches as closely as possible to what you are trying to do.