It doesnt. I think maby i installed it wrong wat i did was i extracted the zip file to a map. Then i copyed the entdefs.pk3 file to mohaa/main. But it says something about
""Ensure that your paths (basepath, mapspath, autosave) in the project properly point to your MOHAA installation. This information is stored in the qe4 file. You can set these from File->Project Settings.""