hi there zip download is not working i have gallery script installed and it has a cart module by which images can be added to the cart and from there they could be downloaded in a zip file using zip download module but it can't be downloaded.
What error are you seeing server side as to why its not working?
A zip file placed within the webspace would be downloadable unless somethings changed with your .htaccess file. Try it yourself, place a test zip file (say call it test.zip) in your public_html folder and try and access it as http://gafog.elementfx.com/test.zip if that works, you know its something within the pages which you would need to talk with the authors about