What steps will reproduce the problem?
1. I can't add Items to the junk list.

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

What version of the product are you using?
4.4

Do you have an error log of what happened?
Date: 2010-12-18 18:31:13
ID: 2
Error occured in: Global
Count: 1
Message: ..\AddOns\Scrap_Merchant\Scrap_Merchant.lua line 151:
   attempt to index upvalue 'List' (a nil value)
Debug:
   [C]: ?
   Scrap_Merchant\Scrap_Merchant.lua:151 OnReceiveDrag()
   Scrap\Scrap.lua:31
      Scrap\Scrap.lua:31
AddOns:
  Swatter, v3.2.2 (<%codename%>)
  NPCScan, v4.0.0.6
  NPCScanOverlay, v4.0.0.4
  AckisRecipeList, v2.0.5
  Armory, vv9.3.3
  ArmoryGuildBank, vv9.3.3
  AtlasLoot, vv6.01.01
  AucAdvanced, v5.9.4960 (WhackyWallaby)
  AucFilterBasic, v5.9.4960 (WhackyWallaby)
  AucFilterOutlier, v5.9.4960.2531
  AucMatchUndercut, v5.9.4960.2531
  AucStatHistogram, v5.9.4960 (WhackyWallaby)
  AucStatiLevel, v5.9.4960 (WhackyWallaby)
  AucStatPurchased, v5.9.4960 (WhackyWallaby)
  AucStatSales, v5.9.4960.2842
  AucStatSimple, v5.9.4960 (WhackyWallaby)
  AucStatStdDev, v5.9.4960 (WhackyWallaby)
  AucStatWOWEcon, v5.9.4960.2530
  AucUtilAHWindowControl, v5.9.4960.3311
  AucUtilAppraiser, v5.9.4960.2530
  AucUtilAskPrice, v5.9.4960.3175
  AucUtilAutoMagic, v5.9.4960.3142
  AucUtilCompactUI, v5.9.4960.2530
  AucUtilEasyBuyout, v5.9.4960.3583
  AucUtilFixAH, v5.9.4960 (WhackyWallaby)
  AucUtilGlypher, v5.9.4960.2545
  AucUtilItemSuggest, v5.9.4960.3108
  AucUtilPriceLevel, v5.9.4960.2545
  AucUtilScanButton, v5.9.4960.2530
  AucUtilScanFinish, v5.9.4960.2530
  AucUtilScanProgress, v5.9.4960.2530
  AucUtilScanStart, v5.9.4960.4819
  AucUtilSearchUI, v5.9.4960.3655
  AucUtilSimpleAuction, v5.9.4960.4546
  AucUtilVendMarkup, v5.9.4960.2530
  AuctionProfitMaster, v1.4
  AutoBar, vv4.0.3.07
  Babylonian, v5.1.DEV.130
  Baggins, v440
  BagginsAnywhereBags, v1.0.77
  BagginsLibFilter, v2010-10-14.2
  BagginsProfessions, v2010-10-14.2
  BagginsSearch, v1.0.41
  BagginsToken, v1.1
  BagginsUsable, v2010-10-14.2
  BeanCounter, v5.9.4960 (WhackyWallaby)
  BulkMail2, v4.0.2
  Carbonite, v4.031
  CarboniteTransfer, v1.01
  Collectinator, v1.0.5
  Configator, v5.1.DEV.282
  DataStore, v3.2.002b
  DataStoreAuctions, v3.3.001
  DataStoreCharacters, v3.2.002
  DataStoreContainers, v3.2.002
  DataStoreCurrencies, v3.2.002
  DataStoreInventory, v3.2.002
  DataStoreMails, v3.2.002
  DBMCore, v
  DebugLib, v5.1.DEV.275
  DrDamage, v1.8.0_release-3
  Enchantrix, v5.9.4960 (WhackyWallaby)
  EnchantrixBarker, v5.9.4960 (WhackyWallaby)
  FBMergeDatabase, v0.9.9
  FBOutfitDisplayFrame, v0.9.9b
  FBTrackingFrame, v0.9.9b
  FishingAce, v0.5.0e
  FishingBuddy, v0.9.9d
  Gatherer, v3.2.2
  GatherMate2, v1.0.7
  GearScore, v4.0.02
  Glamour, v1.2.0
  Informant, v5.9.4960 (WhackyWallaby)
  myhonor, v1.3.0
  Omen, v3.1.0
  Overachiever, v0.59
  OverachieverTrade, v0.59
  Postal, v3.4.4
  Prat30, v3.4.13    
  Prat30Libraries, v
  ProfessionsVault, v3.6
  ProfMax, v2.0
  RatingBuster, v
  RazerNaga, v1.3.2
  RazerNagaCast, v
  RazerNagaRoll, v
  RazerNagaTotems, v
  RazerNagaXP, v
  Scrap, v
  ScrapCleaner, v
  ScrapLauncher, v
  ScrapMerchant, v
  ScrapOptions, v
  ScrollMaster, v45
  Skillet, v
  SlideBar, v3.2.2 (<%codename%>)
  SmartBuff, v4.0d
  SmartDebuff, v4.0e
  Stubby, v5.9.4960 (WhackyWallaby)
  Titan, v5.0.1.40000 - Revision 485
  TitanBag, v5.0.1.40000
  TitanClock, v5.0.1.40000
  TitanCritLine, v0.6.9
  TitanCurrency, v0.4
  TitanDurability, v1.22
  TitanGatherer, v4.0.0
  TitanGold, v5.0.1.40000
  TitanGuild, v3.6k
  TitanLocation, v5.0.1.40000
  TitanLootType, v5.0.1.40000
  TitanMail, v4.04
  TitanMount, v4.0.0
  TitanMyCurrency, v1.3.5
  TitanPals, v5.0.1.40000 - r63
  TitanPerformance, v5.0.1.40000
  TitanQuests, v3.0.1
  TitanRaidIds, v2.4.71
  TitanRepair, v5.0.1.40000
  TitanReputation, v3.6.8
  TitanRoll, v
  TitanSpec, v1.7.3.1.40000
  TitanVolume, v5.0.1.40000
  TitanXP, v5.0.1.40000
  WIM, v3.5.1
  XPerl, v3.1.1
  XPerlArcaneBar, v
  XPerlParty, v
  XPerlPartyPet, v
  XPerlPlayer, v
  XPerlPlayerBuffs, v
  XPerlPlayerPet, v
  XPerlRaidAdmin, v
  XPerlRaidFrames, v
  XPerlRaidHelper, v
  XPerlRaidMonitor, v
  XPerlRaidPets, v
  XPerlTarget, v
  XPerlTargetTarget, v
  BlizRuntimeLib_deDE v4.0.3.40000 <eu>
  (ck=e9e)

Please provide any additional information below.