error to concatenate

[-misterX-]

two things... 1) the console reports bad argument on setElementData 2) it says error to concatenate on the second warnText

function addACLGroupObject ( thePlayer, cmd, invitedPlayer) 
    if not invitedPlayer then 
        -- print out message to chatbox 
        return warnText("Error syntax: /invite ") 
    end 
local inviterGroup = getElementData(thePlayer, "group") 
local invitedOne = getPlayerFromName(invitedPlayer) 
setElementData(invitedOne, "invitedTo", inviterGroup) 
warnText("you invited"..invitedPlayer, thePlayer) 
warnText("you has been invited to: " ..inviterGroup.. "by: " ..getPlayerName(thePlayer), thePlayer) 
end 
addCommandHandler ( "invite", addACLGroupObject ) 

[Castillo]

Check if 'invitedOne' is a valid player element before set element data, also, the error on warnText could be that 'inviterGroup' is returning 'nil'.