What steps will reproduce the problem?
1. logging in
2.
3.

What is the expected output? What do you see instead?
error message

What version of the product are you using?
latest

Do you have an error log of what happened?
Date: 2010-10-23 11:37:50
ID: 1
Error occured in: Global
Count: 1
Message: [string "ItemDataCacheTooltip:Onload"] line 1:
   attempt to index global 'this' (a nil value)
Debug:
   (tail call): ?
   [C]: ?
   [string "*:Onload"]:1:
      [string "*:Onload"]:1
AddOns:
  Swatter, v5.9.4960 (WhackyWallaby)
  Ace3, v
  AckisRecipeList, v2.0.4
  ACP, v3.3.8
  Altoholic, v4.0.002
  Atlas, v1.17.2
  AtlasBattlegrounds, v1.17.2
  AtlasDungeonLocs, v1.17.2
  AtlasOutdoorRaids, v1.17.2
  AtlasTransportation, v1.17.2
  AtlasLoot, vv5.11.07
  AtlasLootFu, vv5.11.07
  Babylonian, v5.1.DEV.130
  Bagnon, v2.14.0
  BagnonBrighter, v1.2.0
  BagnonForever, v1.1.2
  BagnonTooltips, v
  Bartender4, v4.4.12
  Bartender4Dualspec, v
  BeanCounter, v5.9.4960 (WhackyWallaby)
  Bejeweled, v1.1b
  BonusScanner, v5.3.1
  Carbonite, v4.011
  CarboniteTransfer, v1.01
  Configator, v5.1.DEV.282
  DataStore, v4.0.001
  DataStoreAchievements, v4.0.001
  DataStoreAuctions, v4.0.001
  DataStoreCharacters, v4.0.001
  DataStoreContainers, v4.0.001
  DataStoreCrafts, v4.0.001
  DataStoreCurrencies, v4.0.001
  DataStoreInventory, v4.0.001
  DataStoreMails, v4.0.001
  DataStorePets, v4.0.001
  DataStoreQuests, v4.0.001
  DataStoreReputations, v4.0.001
  DataStoreSpells, v4.0.001
  DataStoreStats, v4.0.001
  DataStoreTalents, v4.0.001
  DebugLib, v5.1.DEV.275
  Decursive, v2.5.2.1
  DrDamage, v1.7.8_release
  ElitistGroup, v
  Enchantrix, v5.9.4960 (WhackyWallaby)
  EnchantrixBarker, v5.9.4960 (WhackyWallaby)
  EventAlert, v4.5.1
  Factionizer, v40000.1
  FBMergeDatabase, v0.9.9
  FBOutfitDisplayFrame, v0.9.9
  FishingBuddy, v0.9.9a
  FuBar, v
  FuBarAtlasFu, v
  FuBarCraftTimersFu, v
  FuBarMailFu, vv3.1.3-3
  FuBarMoneyFu, vv1.2.4
  FuBarNetWorthFu, v
  FuBarPortalFu, v1.18
  GatherHud, vv1.1.6
  GatherMate, vv.1.24
  GatherMate2, v1.0.1
  GatherMateSharing, v1.3
  GearScore, v3.1.20 - Release
  GemHelper, v1.8.3
  Genie, v4.0_beta
  GenieLDB, v4.0_beta
  GenieUI, v4.0_beta
  GTFO, v2.8
  HealBot, v4.0.1.1
  ItemDataCache, v1.303
  LibRock10, v
  Outfitter, v5.0.3
  Overachiever, v0.56
  OverachieverTrade, v0.56
  Recount, v
  SlideBar, v5.9.4960 (WhackyWallaby)
  Stubby, v5.9.4960 (WhackyWallaby)
  TomTom, vv40000-1.0.0
  BlizRuntimeLib_enUS v4.0.1.40000 <us>
  (ck=7cc)

Please provide any additional information below.