What steps will reproduce the problem?
1. Simply login, then check the errors

What version of the product are you using?
2008/10/17 from Curse Client

Do you have an error log of what happened?

----------------------------8<-----------------------------
Date: 2008-11-16 15:01:45
ID: 3
Error occured in: Global
Count: 1
Message: ...\SpecialEvents-Mount-2.0\SpecialEvents-Mount-2.0.lua line 48:
   attempt to index upvalue 'scanner' (a nil value)
Debug:
   Ace2\AceEvent-2.0\AceEvent-2.0.lua:299 TriggerEvent()
   ...ed\SpecialEvents-Aura-2.0\SpecialEvents-Aura-2.0.lua:493
      ...ed\SpecialEvents-Aura-2.0\SpecialEvents-Aura-2.0.lua:228
   [C]: ?
   Ace2\AceEvent-2.0\AceEvent-2.0.lua:298 TriggerEvent()
   Ace2\AceEvent-2.0\AceEvent-2.0.lua:910
      Ace2\AceEvent-2.0\AceEvent-2.0.lua:903
AddOns:
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  WowheadLooter, v30014
  AbacusLib, v
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  AtlasBattlegrounds, v1.12.3
  AtlasDungeonLocs, v1.12.3
  AtlasFlightPaths, v1.12.3
  AtlasOutdoorRaids, v1.12.3
  AtlasLoot, v5.02.00
  AtlasLootFu, v1.2
  AucAdvanced, v5.1.3613 (SnaggleTooth)
  AucFilterBasic, v5.1.3613 (SnaggleTooth)
  AucFilterOutlier, v5.1.3613.2531
  AucMatchUndercut, v5.1.3613.2531
  AucStatClassic, v5.1.3613 (SnaggleTooth)
  AucStatHistogram, v5.1.3613 (SnaggleTooth)
  AucStatPurchased, v5.1.3613 (SnaggleTooth)
  AucStatSales, v5.1.3613.2842
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  AucUtilEasyBuyout, v5.1.3613.3583
  AucUtilItemSuggest, v5.1.3613.3108
  AucUtilPriceLevel, v5.1.3613.2545
  AucUtilScanButton, v5.1.3613.2530
  AucUtilScanFinish, v5.1.3613.2530
  AucUtilScanProgress, v5.1.3613.2530
  AucUtilSearchUI, v5.1.3613.3483
  AucUtilVendMarkup, v5.1.3613.2530
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  CartographerPOI, v2.0
  CartographerProfessions, v2.0
  CartographerWaypoints, v2.0
  CartographerZoneInfo, v2.0
  Configator, v5.1.DEV.130
  CowTip, v
  CrayonLib, v
  CurseProfiler, v
  DebugLib, v5.1.DEV.130
  DeclineDuel, v1.0
  Deformat, v1.0 $Revision: 3817 $
  DewdropLib, v
  DoTimer, v4.1
  eCastingBar, v
  Enchantrix, v5.1.3613 (SnaggleTooth)
  EnhTooltip, v5.1.3613 (SnaggleTooth)
  EQCompare, v1.4
  Examiner, v08.10.30
  FlightMap, v
  FuBar, v
  FuBarAddonSpamFu, v1.0.0
  FuBarExperienceFu, v1.1 $Revision: 65606 $
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  GFWLinkerator, v3.0.1
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  GuildCraft, v
  Incubator, v2.00
  Informant, v5.1.3613 (SnaggleTooth)
  ItemRack, v
  LibBabbleClass30, v
  LibRockComm10, v
  LibRockConfig10, v
  LibRockConsole10, v
  LibRockDB10, v
  LibRockEvent10, v
  LibRockHook10, v
  LibRockLocale10, v
  LibRockModuleCore10, v
  LibRockTimer10, v
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  MarkBar, v0.9
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  MobInfo2Browser, v1.31
  MonkeyBuddy, v
  MonkeyLibrary, v
  MonkeyQuest, v
  MonkeyQuestLog, v
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  SpamMeNot, v3.0
  SpecialEventsAura20, v
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  SpecialEventsLearnSpell20, v
  SpecialEventsLoot10, v
  SpecialEventsMail20, v
  SpecialEventsMount20, v
  SpecialEventsMovement20, v
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  Stubby, v5.1.3613 (SnaggleTooth)
  TabletLib, v
  TankPoints, v
  UniChatLogger, v0.1
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  XPerlParty, v
  XPerlPartyPet, v
  XPerlPlayer, v
  XPerlPlayerBuffs, v
  XPerlPlayerPet, v
  XPerlRaidFrames, v
  XPerlTarget, v
  XPerlTargetTarget, v
  XRS, v2.2
  (ck=1423)
----------------------------8<-----------------------------

Please provide any additional information below.