Autoblog zip file fails to unzip

Hello,

I just downloaded autoblog from:
https://premium.wpmudev.org/download/2104507043_autoblog-3.0.zip

When I try to unzip/ extract it I get this error:

Archive: /home/josef/2104507043_autoblog-3.0.zip
[/home/josef/2104507043_autoblog-3.0.zip]
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.
zipinfo: cannot find zipfile directory in one of /home/josef/2104507043_autoblog-3.0.zip or
/home/josef/2104507043_autoblog-3.0.zip.zip, and cannot find /home/josef/2104507043_autoblog-3.0.zip.ZIP, period.

Any ideas?