That other comma isn't necessary but I doubt it is causing you any issues either:
Other than that, I couldn't see anything obvious wrong with those entries. Perhaps someone else has an idea? 
edit: Oh yeah, could you perhaps attach the leaderhead infos file or whatever it is where the leaders themselves are defined in the XML? Because the Shaka entry must be in the right spot between Saladin and Sitting Bull...
Code:
(iShaka, iZara_Yaqob[COLOR="Red"],[/COLOR]),

edit: Oh yeah, could you perhaps attach the leaderhead infos file or whatever it is where the leaders themselves are defined in the XML? Because the Shaka entry must be in the right spot between Saladin and Sitting Bull...