280x SharedXML\UIDropDownMenu.lua:1345: attempt to index field '?' (a nil value)
[string "@SharedXML\UIDropDownMenu.lua"]:1345: in function `UIDropDownMenu_EnableButton'
[string "@FrameXML\UnitPopupShared.lua"]:257: in function `OnUpdate'
[string "@FrameXML\UnitPopupShared.lua"]:283: in function `UnitPopup_OnUpdate'
[string "*:OnUpdate"]:3: in function <[string "*:OnUpdate"]:1>

Locals:
level = 1
id = 13
(*temporary) = nil
(*temporary) = nil
(*temporary) = "1"
(*temporary) = "Button"
(*temporary) = "13"
(*temporary) = "attempt to index field '?' (a nil value)"