fedora 21 will not extract a .zip file from command line or archive manager
I am trying to extract a pidora image on my fedora computer. When I try with the archive manager I get a message that says "an error occurred while loading the archive". When I try it from the Command Line using unzip i get the following: "Archive: Pidora-2014-R3.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. unzip: cannot find zipfile directory in one of Pidora-2014-R3.zip or Pidora-2014-R3.zip.zip, and cannot find Pidora-2014-R3.zip.ZIP, period.
Any help would be appreciated. Thank you in advance