On a Cpanel/WHM server, Fantastico is missing in Cpanel. I checked WHM, bout could not find Fantastico link in WHM. So i reinstalled Fantastico and it started working.

cd /usr/local/cpanel/whostmgr/docroot/cgi
wget -N http://www.netenberg.com/files/free/fantastico_whm_admin.tgz
tar -xzpf fantastico_whm_admin.tgz
rm -rf fantastico_whm_admin.tgz

Now go to WHM, login as root and follow the link
WHM -> Add-Ons -> Fantastico De Luxe WHM Admin (scroll down the left menu).

And click on Install Link.