What steps will reproduce the problem?
1. Logging into World of Warcraft with any character.
2.
3.

What is the expected output? What do you see instead?
I don't notice any errors, just reporting to make sure the issue is known.

What version of the product are you using?
v1.303 (latest)

Do you have an error log of what happened?
Date: 2009-09-25 01:56:50
ID: 1
Error occured in: Global
Count: 8
Message: ...\AddOns\ItemDataCache\ItemDataCache_Scan_Tooltip.lua line 25:
   attempt to perform arithmetic on upvalue 'scaningStack' (a nil value)
Debug:
   [C]: ?
   ...\AddOns\ItemDataCache\ItemDataCache_Scan_Tooltip.lua:25
      ...\AddOns\ItemDataCache\ItemDataCache_Scan_Tooltip.lua:22
   [C]: SetBagItem()
   ...\AddOns\ItemDataCache\ItemDataCache_Scan_Tooltip.lua:189 TooltipScanBagItemIsSoulbound()
   TitanItemDed\TitanItemDed.lua:1051
      TitanItemDed\TitanItemDed.lua:1039
   TitanItemDed\TitanItemDed.lua:340
      TitanItemDed\TitanItemDed.lua:315
   TitanItemDed\TitanItemDed.lua:218 TitanItemDed_OnEvent()
   [string "*:OnEvent"]:1:
      [string "*:OnEvent"]:1
AddOns:
  Swatter, v3.1.14 (<%codename%>)
  ItemDataCache, v1.303
  SlideBar, v3.1.14 (<%codename%>)
  Titan, v4.3.0.30200 - Revision 316
  TitanAmmo, v4.3.0.30200
  TitanBag, v4.3.0.30200
  TitanClock, v4.3.0.30200
  TitanCoords, v4.3.0.30200
  TitanGoldTracker, v4.3.0.30200
  TitanItemDed, v4.0.6
  TitanLootType, v4.3.0.30200
  TitanPerformance, v4.3.0.30200
  TitanRegen, v4.3.0.30200
  TitanRepair, v4.3.0.30200
  TitanSpeed, v3.2.001
  TitanVolume, v4.3.0.30200
  TitanXP, v4.3.0.30200
  BlizRuntimeLib_enUS v3.2.2.30200 <us>
  (ck=20d)

Please provide any additional information below.
I believe it is a compatibility problem with TitanItemDed v4.0.6. I only loaded Swatter, SlideBar (which I use to capture Swatter button), Titan default addons plus Itemized Deductions, and ItemDataCache.