[ThunderJG]

Every time I log on I get this message:
Date: 2014-12-23 09:42:18
ID: 1
Error occured in: Global
Count: 1
Message: ..\AddOns\Carbonite\NxMap.lua line 9066:
Usage: GetMapNameByID(mapID)
Debug:
[C]: GetMapNameByID()
Carbonite\NxMap.lua:9066: GetWorldZoneInfo()
Carbonite\NxMap.lua:7216: ClipZoneFrm()
...erface\AddOns\_NPCScan.Overlay\Modules\Carbonite.lua:250:
...erface\AddOns\_NPCScan.Overlay\Modules\Carbonite.lua:236
...erface\AddOns\_NPCScan.Overlay\Modules\Carbonite.lua:289:
...erface\AddOns\_NPCScan.Overlay\Modules\Carbonite.lua:280
[C]: ?
Locals:
(*temporary) = nil

AddOns:
Can anyone tell me what it means?
And how to fix it?