What steps will reproduce the problem?
1. Opened Auction House window.
2. Bugged popped up.

What version of the product are you using?
RecipeKnown Version 0.110
I use this version because it's compatible with Auctioneer.

Do you have an error log of what happened?
Yes. See below.

Date: 2008-10-04 18:19:49
ID: 3
Error occured in: Global
Count: 1
Message: ..\AddOns\RecipeKnown\RecipeKnown.lua line 443:
   Usage: GetItemInfo(itemID|"name"|"itemlink")
Debug:
   [C]: ?
   [C]: GetItemInfo()
   RecipeKnown\RecipeKnown.lua:443 RecipeKnown_GetItemID()
   RecipeKnown\RecipeKnown.lua:474 RecipeKnown_ScanItems()
   RecipeKnown\RecipeKnown.lua:726 RecipeKnown_GetNum_Auction()
   RecipeKnown\RecipeKnown.lua:275 RecipeKnown_EventScan()
   [string "*:OnEvent"]:1:
      [string "*:OnEvent"]:1
AddOns:
  AtlasLoot, vAtlasLoot Enhanced v4.06.04
  Auctioneer, v5.0.PRE.3471
  BonusScanner, v3.5
  Enchantrix, v5.0.PRE.3471
  EnhTooltip, v5.0.PRE.3471
  FishingBuddy, v0.9.4l
  HandyNotes, v1.0
  HandyNotesFlightMasters, v1
  HandyNotesGuild, v1.0
  HealBot, v2.4.3.16
  Informant, v5.0.PRE.3471
  InstantHealth, v1.1
  PersonalSentry, v1.60b
  QuestHelper, v0.54
  ReagentRestocker, v0.9c
  RecipeKnown, v0.110.20100
  Stubby, v93
  Swatter, v5.0.PRE.3471
  TitanAmmo, v3.2.9.20400
  TitanCoords, v3.2.9.20400
  TitanGoldTracker, v3.2.9.20400
  TitanHonorGrindFU, v3.1.20400
  TitanItemBonuses, v3.2.9.20400
  TitanPerformance, v3.2.9.20400
  TitanRegen, v3.2.9.20400
  TitanRepair, v3.2.9.20400
  TitanStanceSets, v3.2.9.20400
  Titan, v3.2.9.20400
  WeaponQuickSwap
  WhereToNow, vVersion
  DBMAPI