can't unzip the file (mac or linux)

http://exslt.org/dyn/dyn.zip

$ unzip dyn.zip
Archive:  dyn.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 dyn.zip or
        dyn.zip.zip, and cannot find dyn.zip.ZIP, period.


-- 
Anthony Ettinger
408-656-2473
http://anthony.ettinger.name