End-of-central-directory signature not found. Either this file is not
a zipfile, or it constitutes one disk of a multi-part archive. In the
latter case the central directory and zipfile comment will be found on
the last disk(s) of this archive.
You might also be interested that the download mirror link is broken.
I did run a test download from an external machine, and the main URL for the zip file was able to download and unzip ok. Let us know if you're still having problems with it.
