Error with Jamba and ISBoxer

This is odd:

Message: ...\AddOns\Blizzard_InspectUI\InspectPaperDollFram e.lua:23: Usage: UnitLevel("unit")
Time: 01/23/11 21:27:24
Count: 34
Stack: [C]: in function `UnitLevel'
...\AddOns\Blizzard_InspectUI\InspectPaperDollFram e.lua:23: in function `InspectPaperDollFrame_SetLevel'
...\AddOns\Blizzard_InspectUI\InspectPaperDollFram e.lua:18: in function <...\AddOns\Blizzard_InspectUI\InspectPaperDollFra me.lua:8>

Locals: (*temporary) = nil

It is constantly popping up on one of my toons, any ideas ?

NM updated jamba all set