This solution will fix the minor bug in the export and download.

(1) Copy the ZenPack directory to /tmp

cp ZenPacks.Community.CiscoCallManager-1.1-py2.4.egg /tmp

(2) Remove the ZenPack

zenpack --remove=ZenPacks.Community.CiscoCallManager

and also delete the directory

rm ZenPacks.Community.CiscoCallManager-1.1-py2.4.egg -fr

(3) Create a new ZenPack

* Click "Setting" -> "ZenPacks" tag

* From dropdown menu, click "Create a ZenPack"

Name: ZenPacks.Community.CiscoCallManager

Then click "OK" button

(4) Copy /tmp/ZenPacks.Community.CiscoCallManager-1.1-py2.4.egg/ZenPacks/Community/CiscoCallManager/* back to the new ZenPack's /ZenPacks/Community/CiscoCallManager/

(5) zopectl restart (Once you change the ZenPack version in webpage, zopectl has to restart)

Now you can export or download the zenpack without any problem.