What steps will reproduce the problem?
1. Farm some greys
2. Open a merchant to sell
3. boom

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

What version of the product are you using?
curse gamings  1/4/2009 release

Do you have an error log of what happened?

Date: 2009-04-03 15:27:57
ID: 69
Error occured in: Global
Count: 1
Message: ...terface\AddOns\Broker_GarbageFu\Broker_GarbageFu.lua line 2136:
   bad argument #4 to 'format' (string expected, got nil)
Debug:
   (tail call): ?
   [C]: format()
   ...terface\AddOns\Broker_GarbageFu\Broker_GarbageFu.lua:2136 MyPrint()
   ...terface\AddOns\Broker_GarbageFu\Broker_GarbageFu.lua:1692 CheckItem()
   Broker_GarbageFu\Sell.lua:135
      Broker_GarbageFu\Sell.lua:130
   (tail call): ?
   [C]: ?
   [string "safecall Dispatcher[1]"]:9:
      [string "safecall Dispatcher[1]"]:5
   (tail call): ?
   ...ce\AddOns\Analyst\Libs\AceTimer-3.0\AceTimer-3.0.lua:146
      ...ce\AddOns\Analyst\Libs\AceTimer-3.0\AceTimer-3.0.lua:118

AddOns:
  Swatter, v5.1.3715 (SnaggleTooth)
  AckisRecipeList, v1.0 RC5 1595
  ACP, v3.0.3.0.10
  AddonLoader, v2.0
  AdvancedTradeSkillWindow, v
  Afterlife, v5.5.12.8
  AlexLib, v0.1
  AlwaysLFG, v1.1
  Analyst, v1.0.6 for World of Warcraft 3.0.9
  Armory, v6.0.6
  ArmoryGuildBank, v6.0
  Atlas, v1.13.0
  AtlasBattlegrounds, v1.13.0
  AtlasDungeonLocs, v1.13.0
  AtlasOutdoorRaids, v1.13.0
  AtlasTransportation, v1.13.0
  AtlasLoot, vv5.03.03
  AtlasLootBurningCrusade, vv5.03.03
  AtlasLootWrathoftheLichKing, vv5.03.03
  AtlasLootFu, vv5.03.03
  AucAdvanced, v5.4.4128 (WallabyII)
  AucFilterBasic, v5.4.4128 (WallabyII)
  AucFilterOutlier, v5.4.4128.2531
  AucMatchUndercut, v5.4.4128.2531
  AucScanData, v5.4.4128 (WallabyII)
  AucStatClassic, v5.4.4128 (WallabyII)
  AucStatHistogram, v5.4.4128 (WallabyII)
  AucStatiLevel, v5.4.4128 (WallabyII)
  AucStatPurchased, v5.4.4128 (WallabyII)
  AucStatSales, v5.4.4128.2842
  AucStatSimple, v5.4.4128 (WallabyII)
  AucStatStdDev, v5.4.4128 (WallabyII)
  AucStatWOWEcon, v5.4.4128.2530
  AucUtilAHWindowControl, v5.4.4128.3311
  AucUtilAppraiser, v5.4.4128.2530
  AucUtilAskPrice, v5.4.4128.3175
  AucUtilAutoMagic, v5.4.4128.3142
  AucUtilCompactUI, v5.4.4128.2530
  AucUtilEasyBuyout, v5.4.4128.3583
  AucUtilItemSuggest, v5.4.4128.3108
  AucUtilPriceLevel, v5.4.4128.2545
  AucUtilScanButton, v5.4.4128.2530
  AucUtilScanFinish, v5.4.4128.2530
  AucUtilScanProgress, v5.4.4128.2530
  AucUtilSearchUI, v5.4.4128.3655
  AucUtilSimpleAuction, v5.4.4128.0
  AucUtilVendMarkup, v5.4.4128.2530
  AuldLangSyne, v2.0
  AuldLangSyneBackup, v2.0
  AuldLangSyneFriendList, v2.0
  AuldLangSyneFu, v2.0
  AuldLangSyneGuildList, v2.0
  AuldLangSyneInfo, v2.0
  AuldLangSyneNote, v2.0
  AuldLangSynePanel, v2.0
  AuldLangSyneSync, v2.0
  AutoDinger, v1.0.2
  AutoEmote, v1.0
  autograts, v
  AutoLootToggle, vr3
  Automaton, v1.3.5
  AutoTurnin, v3.0.6
  Babylonian, v5.1.DEV.130
  BanzaiAlert, v2.0
  Bartender4, v4.3.0-beta2
  BeanCounter, v5.4.4128 (WallabyII)
  BigWigs, v2.0
  BottomLessBag, v1.1
  BrokerCrystalMote, v1.6
  BrokerCurrency, vv3.00.08.13
  BrokerDurability, v1.0
  BrokerExtractor, v1.5.0-release
  BrokerFactions, v1.9
  BrokerGarbageFu, v3.0.20
  BrokerLocation, v
  BrokerLootType, v1.1.1
  BrokerNameToggle, v0.1
  BrokerPortals, v1.7.4
  BrokerRecZone, v3.0.62
  BrokerSpeed, v1.0
  BuyEmAll, v
  CallToArms, v
  Carbonite, v3.001
  CarboniteTransfer, v1.01
  Casualty, v3.0
  CCFocus, v1.6
  CensusPlus, v4.2.2
  Configator, v5.1.DEV.130
  Considerater, v0.1
  CopyThat, v
  CTBuffMod, v3.006 (CTMod 3.0)
  CTCore, v3.014 (CTMod 3.0)
  CurseProfiler, v
  cyCircled, v0.5
  cyCircledOnyx, v3.0.3.2
  cyCircledVolM, v2.3.1
  DBMBurningCrusade, v
  DBMCore, v
  DBMLDB, v
  DBMRaidLeadTools, v
  DBMSpellTimers, v
  DebugLib, v5.1.DEV.130
  Decursive, v2.4_beta_3_STABLE
  DerAssistHelper, v0.9.1
  Digits, v1.0
  DockingStation, v0.2.11 (Beta)
  DoubleWide, v
  DPS, v1.95
  DragQueen, v3.0.2-1.01
  DrDamage, v1.6.0b
  Enchantrix, v5.4.4128 (WallabyII)
  EnchantrixBarker, v5.4.4128 (WallabyII)
  EveryQuest, v$Revision: 48 $
  EveryQuestNorthrend, v1
  EWOlsonEmoteMenu, v
  Examiner, v09.03.15
  FaceSmasher, v1.291
  FishingBuddy, v0.9.6n
  FlightHUD, v0.7.15
  FlightMap, v
  FuBar, v
  FuBar2Broker, v1.0.3
  FuBarAtlasFu, v
  GatherMate, vv1.16
  GatherMateSharing, v1.1
  GatherSkillNeeded, v0.13
  GatherTogether, vr0.5.1
  GatherTogetherGathererSupport, vr0.5.1
  GatherTogetherGatherMateSupport, vr0.5.1
  GatherTogetherMetaMapSupport, vr0.5.1
  GEM3Core, v3.28
  GEM3UI, v1.97
  GetOverHere, v2.00
  GhostPulse, v2.3
  Gratz, v
  GridLib, v1.0
  HealBot, v3.0.9.1
  HelpMeSheep, v3.03
  Informant, v5.4.4128 (WallabyII)
  InventoryOnPar, v
  ItemPriceTooltip, v88
  KillingSpree, v
  LightHeaded, v278
  LittleWigs, v3.0.0
  LittleWigsTBC, v
  LootHog, v3.1.3
  LootLink, v
  LootSink, v1
  LootWhore, v1.2
  ManaPerc, vv1.4.1
  MaterialsTracker, v30000.01
  MirageUIClearFont2, v30000.a Mirage UI
  MirageUIClearFont2FontPack, v30000.a
  MirageUICore, v30000.a
  MirageUISunnViewportArtPack, v30000.a
  MirageUIXPBar, v30000.a
  MonkeyLibrary, v
  MonkeySpeed, v
  MouseLookLock, v2.2
  myBindings2, v2.1.$LastChangedRevision: 51 $
  NazGuildWelcomer, v1.6
  NShakedown, v
  OgriLazy, v1.1.0
  Omen, v3.0.6
  Omnibus, v
  OmniCC, v2.3.1
  OpenAllBags, v
  Parrot, vv1.6.6
  PriestFriend, v2.3
  Quartz, v1.0
  QuartzBuff, v1.0
  QuartzFlight, v1.0
  QuartzFocus, v1.0
  QuartzGCD, v1.0
  QuartzInterrupt, v1.0
  QuartzLatency, v1.0
  QuartzMirror, v1.0
  QuartzPet, v1.0
  QuartzPlayer, v1.0
  QuartzRange, v1.0
  QuartzTarget, v1.0
  QuartzTimer, v1.0
  QuartzTradeskill, v1.0
  RatingBuster, v
  SavedInstances, vv2.0 (r16)
  ScoreSort, vv2
  Scrub, v1.1.7
  SendSelf, vv2.6.0
  ShadowGreenLight, v
  SimpleAssist, v2.61
  SlideBar, v5.4.4128 (WallabyII)
  SmartMount, vv3.0-77
  SmartQueue, vStill work in pregress.
  SpamSentry, v20090223
  StatBlockFactions, v2.1
  Stubby, v5.4.4128 (WallabyII)
  SunnArt, v2.24
  TalentedLoader, v
  TalentWhisper, v2.0
  TankPoints, v
  tekKompare, v3.0.3.5
  TinyTip, v0.3-Beta
  TradeJunkie, v4.0
  WIM, v3.0.9
  Wishlist, v0.5
  WoWLiCe, v0.1.79
  WoWLiCeBags, v0.2.3
  WoWLiCeCombos, v0.1.1
  XPerl, v3.0.2a
  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
  (ck=156b)

Please provide any additional information below.