Is this NUI or

[Necrosir]

is this LUA Error from NUI or another addon

Message: Interface\FrameXML\ChatFrame.lua:3946: attempt to perform arithmetic on a nil value
Time: 12/06/11 16:26:08
Count: 1
Stack: Interface\FrameXML\ChatFrame.lua:3946: in function `ChatEdit_UpdateHeader'
Interface\FrameXML\ChatFrame.lua:3671: in function `ChatEdit_ResetChatType'
Interface\FrameXML\ChatFrame.lua:3743: in function <Interface\FrameXML\ChatFrame.lua:3727>
Interface\FrameXML\ChatFrame.lua:3753: in function `ChatEdit_DeactivateChat'
Interface\FrameXML\InterfaceOptionsPanels.lua:978: in function `InterfaceOptionsSocialPanelChatStyle_SetChatStyle'
Interface\FrameXML\InterfaceOptionsPanels.lua:907: in function <Interface\FrameXML\InterfaceOptionsPanels.lua:894>

Locals: editBox = ChatFrame2EditBox {
0 = <userdata>
headerSuffix = ChatFrame2EditBoxHeaderSuffix {
}
focusLeft = ChatFrame2EditBoxFocusLeft {
}
focusRight = ChatFrame2EditBoxFocusRight {
}
chatFrame = ChatFrame2 {
}
addSpaceToAutoComplete = true
tabCompleteTableIndex = 1
focusMid = ChatFrame2EditBoxFocusMid {
}
header = ChatFrame2EditBoxHeader {
}
}
type = "SAY"
info = <table> {
sticky = 1
flashTabOnGeneral = false
flashTab = false
}
header = ChatFrame2EditBoxHeader {
0 = <userdata>
}
headerSuffix = ChatFrame2EditBoxHeaderSuffix {
0 = <userdata>
}
(*temporary) = nil
(*temporary) = nil
(*temporary) = ChatFrame2EditBoxHeader {
0 = <userdata>
}
(*temporary) = nil
(*temporary) = "SAY"
(*temporary) = "_SEND"
(*temporary) = nil
(*temporary) = nil
(*temporary) = "attempt to perform arithmetic on a nil value"

List of addons
NUI
NUI Config Chat frames
NUI config GUI
skada
DBM
Bloodshield