What steps will reproduce the problem?
1. target random people
2. wait for bugsack's fatality

What is the expected output?
The error is still showing up. I also do see the class tag disapearing in my target frame.

What version of the product are you using?
PitBull4-r20090111051620

Do you have an error log of what happened?

-------------------------------------------
[2009/01/11 13:04:13-565-x14]: PitBull4-r20090111051620\UnitFrameLayout.lua:526 attempt to call field 'SetJustifyH' (a nil value)
PitBull4-r20090111051620\UnitFrameLayout.lua:546 in function <Interface\AddOns\PitBull4\UnitFrameLayout.lua:542
PitBull4-r20090111051620\UnitFrameLayout.lua:728 in function <Interface\AddOns\PitBull4\UnitFrameLayout.lua:604
PitBull4-r20090111051620\UnitFrameLayout.lua:742 in function `UpdateLayout'
PitBull4-r20090111051620\UnitFrame.lua:348 in function `Update'
PitBull4-r20090111051620\UnitFrame.lua:368 in function `UpdateGUID'
PitBull4-r20090111051620\Main.lua:773 in function `CheckGUIDForUnitID'
PitBull4-r20090111051620\Main.lua:777 in function `?'
CallbackHandler-1.0-3 (Ace3):146: in function <...Ons\Ace3\CallbackHandler-1.0\CallbackHandler-1.0.lua:146
<string>:"safecall Dispatcher[1]":4: in function <[string "safecall Dispatcher[1]"]:4>
<in C code>: ?
<string>:"safecall Dispatcher[1]":13: in function `?'
CallbackHandler-1.0-3 (Ace3):91: in function `Fire'
AceEvent-3.0-3 (Ace3):73: in function <Interface\AddOns\Ace3\AceEvent-3.0\AceEvent-3.0.lua:72
<in C code>: in function `CameraOrSelectOrMoveStop'
<string>:"CAMERAORSELECTORMOVE":4: in function <[string "CAMERAORSELECTORMOVE"]:1>

  ---
-------------------------------------------
[2009/01/11 13:24:38-565-x1]: PitBull4-r20090111051620\UnitFrameLayout.lua:526 attempt to call field 'SetJustifyH' (a nil value)
PitBull4-r20090111051620\UnitFrameLayout.lua:546 in function <Interface\AddOns\PitBull4\UnitFrameLayout.lua:542
PitBull4-r20090111051620\UnitFrameLayout.lua:728 in function <Interface\AddOns\PitBull4\UnitFrameLayout.lua:604
PitBull4-r20090111051620\UnitFrameLayout.lua:742 in function `UpdateLayout'
PitBull4-r20090111051620\ModuleHandling\Module.lua:285 in function `Clear'
PitBull4-r20090111051620\UnitFrame.lua:332 in function `Update'
PitBull4-r20090111051620\UnitFrame.lua:368 in function `UpdateGUID'
PitBull4-r20090111051620\Main.lua:773 in function `CheckGUIDForUnitID'
PitBull4-r20090111051620\Main.lua:777 in function `?'
CallbackHandler-1.0-3 (Ace3):146: in function <...Ons\Ace3\CallbackHandler-1.0\CallbackHandler-1.0.lua:146
<string>:"safecall Dispatcher[1]":4: in function <[string "safecall Dispatcher[1]"]:4>
<in C code>: ?
<string>:"safecall Dispatcher[1]":13: in function `?'
CallbackHandler-1.0-3 (Ace3):91: in function `Fire'
AceEvent-3.0-3 (Ace3):73: in function <Interface\AddOns\Ace3\AceEvent-3.0\AceEvent-3.0.lua:72
<in C code>: in function `ClearTarget'
Interface\FrameXML\UIParent.lua:2577 in function `ToggleGameMenu':
<string>:"TOGGLEGAMEMENU":1: in function <[string "TOGGLEGAMEMENU"]:1>

  ---
-------------------------------------------

Please provide any additional information below.

The bugs may depend on the current layout configured by the user. If there is an export function in the future it might be usefull to append the layout of the frame the error was fired from.

Repost to closed bug http://www.wowace.com/projects/pitbull4/tickets/48-pit-bull4-r20090110040821-set-justify-h/

P.S.: How can you re-open tickets?