snapshots not working. it hangs on media or says Error: Manifest data not found in archive.

I am trying to copy a clients current website over to a test site so that i can redesign it. Every time i download the snapshot using the PclZip method and I try to load the content i get the error above. Id i try and download the content using the ziparchive method the download hangs when it gets to the media section and does not download.