What steps will reproduce the problem?
1. Load or reload the WoW client
2.
3.

What is the expected output? What do you see instead?
No errors are expected. I get a LibQTip error.

What version of the product are you using?
r20090315183212

Do you have an error log of what happened?
[2009/03/15 15:51:16-202-x1]: LibQTip-1.0-9 (SilverDragon):277: attempt to index field '?' (a nil value)
LibQTip-1.0-9 (SilverDragon):530: in function <...\AddOns\SilverDragon\lib\LibQTip-1.0\LibQTip-1.0.lua:525
(tail call): ?:
Broker_WhoRoll-v0.91-beta-1-g43e566d\Broker.lua:60 in function `UpdateTooltip'
Broker_WhoRoll-v0.91-beta-1-g43e566d\Core.lua:56 in function <Interface\AddOns\Broker_WhoRoll\Core.lua:50
(tail call): ?:
<in C code>: ?
<string>:"safecall Dispatcher[1]":9: in function <[string "safecall Dispatcher[1]"]:5>
(tail call): ?:
AceAddon-3.0-5 (Ace3):496: in function `EnableAddon'
AceAddon-3.0-5 (Ace3):589: in function <Interface\AddOns\Ace3\AceAddon-3.0\AceAddon-3.0.lua:575
<in C code>: in function `LoadAddOn'
Interface\FrameXML\UIParent.lua:229 in function `UIParentLoadAddOn':
Interface\FrameXML\UIParent.lua:252 in function `CombatLog_LoadUI':
Interface\FrameXML\UIParent.lua:414 in function `UIParent_OnEvent':
<string>:"*:OnEvent":1: in function <[string "*:OnEvent"]:1>

Please provide any additional information below.