Getting an odd error while in a group

[eacable]

Message: ...face\AddOns\Blizzard_InspectUI\InspectGuildFrame.lua:18: Usage: GetGuildInfo("unit")
Time: 12/17/11 22:22:29
Count: 13
Stack: [C]: in function `GetGuildInfo'
...face\AddOns\Blizzard_InspectUI\InspectGuildFrame.lua:18: in function `InspectGuildFrame_Update'
...face\AddOns\Blizzard_InspectUI\InspectGuildFrame.lua:8: in function <...face\AddOns\Blizzard_InspectUI\InspectGuildFrame.lua:6>

Locals: (*temporary) = nil

This pops all the time when I am in a group... any ideas?