[EOCHAIDD]

...and to be on the safe side you will find my addons list and the error message.
msg: Interface\AddOns\QuestHelper\custom.lua:323: attempt to call method 'TextOut' (a nil value)
toc: 1.0.17
v: 1.0.17
game: 3.1.2
locale: enUS
timestamp: 2009-06-01 00:06:18
mutation: nil
silent: false

[C]: in function `TextOut'
Interface\AddOns\QuestHelper\custom.lua:323: in function `PerformSearch'
Interface\AddOns\QuestHelper\custom.lua:334: in function `?'
Interface\AddOns\QuestHelper\help.lua:861: in function `QuestHelper_SlashCommand'
Interface\AddOns\QuestHelper\help.lua:876: in function `value'
Interface\FrameXML\ChatFrame.lua:3353: in function `ChatEdit_ParseText'
Interface\FrameXML\ChatFrame.lua:3052: in function `ChatEdit_SendText'
Interface\FrameXML\ChatFrame.lua:3073: in function `ChatEdit_OnEnterPressed'
[string "*:OnEnterPressed"]:1: in function <[string "*:OnEnterPressed"]:1>

addons:
Atlas, v1.14.1
AtlasBattlegrounds, v1.14.1
AtlasDungeonLocs, v1.14.1
AtlasOutdoorRaids, v1.14.1
AtlasTransportation, v1.14.1
LightHeaded, v288
Nameplates, v$Revision$
QuestHelper, v1.0.17
RecipeRadar, v1.31
TitanGuild, v5.2 (WoTLK)
TitanAmmo, v4.2.2.30100
TitanBag, v4.2.2.30100
TitanCurrency, v0.3.0
TitanGoldTracker, v4.2.2.30100
TitanHonorMarks, v2.1.6
TitanLootType, v4.2.2.30100
TitanPerformance, v4.2.2.30100
TitanRegen, v4.2.2.30100
TitanRepair, v4.2.2.30100
TitanVolume, v4.2.2.30100
Titan, v4.2.2.30100
TomTom, v216