WHM is configured to disallow execution of unregistered applications when logged in as root or a reseller with the “all” ACL.
To enable this functionality you must do one of the following: Register this addon using /usr/local/cpanel/bin/register_appconfig (http://docs.cpanel.net/twiki/bin/view/SoftwareDevelopmentKit/AppConfig), Enable the “Allow apps that have not registered with AppConfig to be run when logged in as root or a reseller with the “all” ACL in WHM” option in “Tweak Settings”, or add permit_unregistered_apps_as_root=1 to /var/cpanel/cpanel.config, and run /usr/local/cpanel/etc/init/startcpsrvd.
Its all done.