Lua so what's wrong?

[Maxwel1]

Simply this script was workin good on Naxedot 3.5 but when i put it in forgotten (Styller Yourots 8.50 V6) it it gave me this error. and ingame when i say hi to the npc it don answer back so any ideas?




Error:

[03/08/2009 14:09:49] Lua Script Error: [Npc interface]
[03/08/2009 14:09:49] data/npc/scripts/Godrick.luanCreatureSay

[03/08/2009 14:09:49] data/npc/scripts/Godrick.lua:40: attempt to

compare nil with number
[03/08/2009 14:09:49] stack traceback:
[03/08/2009 14:09:49] data/npc/scripts/Godrick.lua:40: in function <data/npc/scripts/Godrick.lua:37>



Script:

local focus = 0
local talk_start = 0
local target = 0
local following = false
local attacking = false
local talk_state = 0

function onThingMove(creature, thing, oldpos, oldstackpos)

end


function onCreatureAppear(creature)

end


function onCreatureDisappear(cid, pos)
  	if focus == cid then
          selfSay('Dare to see you here again.')
          focus = 0
          talk_start = 0
  	end
end


function onCreatureTurn(creature)

end


function msgcontains(txt, str)
  	return (string.find(txt, str) and not string.find(txt, '(%w+)' .. str) and not string.find(txt, str .. '(%w+)'))
end


function onCreatureSay(cid, type, msg)
 cname = getCreatureName(cid)

  	if (msgcontains(msg, 'hi') ) and getDistanceToCreature(cid) < 4 then
  		selfSay('Get out of my way, ' .. cname .. '. Orshabaal must die!')
  		talk_state = 0
  		focus = cid
  		talk_start = os.clock()

  	end
end


function onCreatureChangeOutfit(creature)

end


function onThink()


 	if focus ~= 0 then
 		if getDistanceToCreature(focus) > 5 then
 			selfSay('Dare to see you here again.')
 			focus = 0
 		end
 	end
end