You have to be destro.
Type this in: /script PickupSpell(135533)
It will turn your cursor into the spell icon, place it on your bar and enjoy!
"Fix if it doesnt work:
Have mannoroth's fury talented!
Upon changing to KjC I first needed to wait till Cataclysm was off cd and when I did change Cataclysm was disabled."
Fix courtesy of Tronux
Confirmed hotfix.
