Addon NPC problem

[snipey]

when i say 'first barbarian addon'
it doesnt work, none of them work except for a few and i get this error on my log

[09/07/2009 15:44:38] Lua Script Error: [Npc interface]
[09/07/2009 15:44:38] data/npc/scripts/AllAddons.luanCreatureSay

[09/07/2009 15:44:38] data/npc/scripts/AllAddons.lua:33: attempt to call global 'getItemNameById' (a nil value)
[09/07/2009 15:44:38] stack traceback:
[09/07/2009 15:44:38] data/npc/scripts/AllAddons.lua:33: in function 'callback'
[09/07/2009 15:44:38] data/npc/lib/npcsystem/keywordhandler.lua:40: in function 'processMessage'
[09/07/2009 15:44:38] data/npc/lib/npcsystem/keywordhandler.lua:168: in function 'processNodeMessage'
[09/07/2009 15:44:38] data/npc/lib/npcsystem/keywordhandler.lua:128: in function 'processMessage'
[09/07/2009 15:44:38] data/npc/lib/npcsystem/npchandler.lua:371: in function 'onCreatureSay'
[09/07/2009 15:44:38] data/npc/scripts/AllAddons.lua:8: in function <data/npc/scripts/AllAddons.lua:8>

im using this script
http://otland.net/f83/mega-release-...-npc-system-yalaharian-addon-supported-13392/

i need help please!

thanks in advance
ps- i give rep
-

-SOLVED- didnt read the guys post