[Cheeze]

When installing a new race/shipset, sometimes the problems comes from how completely the creator worked on it. Some are just a shipset and generally the AI files so it can play as a computer foe. Others have list of design names and perhaps one or more empires files to go with the shipset. This would require files in different directories, so the creator was just trying to be helpful. These creators usually include a readme file to tell you how to install it, so you might try looking at the zipfile's contents before unzipping.