Thread:Project:Support desk/SemanticGraph ... download not working properly

I've been trying to get the "SemanticGraph" Extension:Semantic_Graph download, but the file is marked as a tar.gz but doesn't open. Changing the extension to .zip and it opens, but doesn't contain any of the php files. I think there is something broken, but cannot find the contact details of the package creator. Can anyone please help..

Thanks

Peter