Windows npc problem

[Venn]

[12:2:48.657] [Error - NpcScript Interface]
[12:2:48.657] data/npc/scripts/Grizzly_Adams.lua:onCreatureSay
[12:2:48.658] Description:
[12:2:48.658] data/npc/scripts/azerus.lua:48: bad argument #1 to 'getn' (table e
xpected, got number)
[12:2:48.658] stack traceback:
[12:2:48.658]   [C]: in function 'getn'
[12:2:48.658]   data/npc/scripts/azerus.lua:48: in function 'doNPCTalkALot'
[12:2:48.659]   data/npc/scripts/Grizzly_Adams.lua:186: in function 'callback'
[12:2:48.659]   data/npc/lib/npcsystem/npchandler.lua:423: in function 'onCreatu
reSay'
[12:2:48.659]   data/npc/scripts/Grizzly_Adams.lua:13: in function <data/npc/scr
ipts/Grizzly_Adams.lua:13>

help me to fix taht plx