What steps will reproduce the problem?
1. Apparently it tries to concatenate a nil value
2.
3.

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

What version of the product are you using?

Do you have an error log of what happened?

Date: 2009-02-03 22:58:13
ID: 1
Error occured in: Global
Count: 1
Message: ..\AddOns\TitanGuild\TitanGuild.lua line 768:
   attempt to concatenate field '?' (a nil value)
Debug:
   (tail call): ?
   [C]: ?
   TitanGuild\TitanGuild.lua:768 TitanPanelGuildButton_ColorPlayerName()
   TitanGuild\TitanGuild.lua:592 tooltipTextFunc()
   Titan\TitanPanelTemplate.lua:420 TitanPanelButton_SetTooltip()
   Titan\TitanPanelTemplate.lua:206 TitanPanelButton_OnEnter()
   [string "*:OnEnter"]:3:
      [string "*:OnEnter"]:1
AddOns:
  Swatter, v5.2.4013 (DingoII)
  WowheadLooter, v30018
  AckisRecipeList, v1.0 RC1 1436
  Atlas, v1.13.0
  AtlasBattlegrounds, v1.13.0
  AtlasDungeonLocs, v1.13.0
  AtlasOutdoorRaids, v1.13.0
  AtlasTransportation, v1.13.0
  AtlasLoot, vv5.03.02
  AtlasLootFu, vv5.03.02
  AucAdvanced, v5.2.4013 (DingoII)
  AucFilterBasic, v5.2.4013 (DingoII)
  AucFilterOutlier, v5.2.4013.2531
  AucMatchUndercut, v5.2.4013.2531
  AucStatClassic, v5.2.4013 (DingoII)
  AucStatHistogram, v5.2.4013 (DingoII)
  AucStatiLevel, v5.2.4013 (DingoII)
  AucStatPurchased, v5.2.4013 (DingoII)
  AucStatSales, v5.2.4013.2842
  AucStatSimple, v5.2.4013 (DingoII)
  AucStatStdDev, v5.2.4013 (DingoII)
  AucStatWOWEcon, v5.2.4013.2530
  AucUtilAHWindowControl, v5.2.4013.3311
  AucUtilAppraiser, v5.2.4013.2530
  AucUtilAskPrice, v5.2.4013.3175
  AucUtilAutoMagic, v5.2.4013.3142
  AucUtilCompactUI, v5.2.4013.2530
  AucUtilEasyBuyout, v5.2.4013.3583
  AucUtilItemSuggest, v5.2.4013.3108
  AucUtilPriceLevel, v5.2.4013.2545
  AucUtilScanButton, v5.2.4013.2530
  AucUtilScanFinish, v5.2.4013.2530
  AucUtilScanProgress, v5.2.4013.2530
  AucUtilSearchUI, v5.2.4013.3655
  AucUtilSimpleAuction, v5.2.4013.0
  AucUtilVendMarkup, v5.2.4013.2530
  Auctionator, v
  AuctionMaster, v3.19
  AutoRepair, v
  Babylonian, v5.1.DEV.130
  Bagnon, v1.6.10
  BagnonForever, v1.1.1
  BagnonTooltips, v
  BeanCounter, v5.2.4013 (DingoII)
  BonusScanner, v4.4
  Cartographer, v2.0
  CartographerBattlegrounds, v2.0
  CartographerCoordinates, v2.0
  CartographerGroupColors, v2.0
  CartographerGuildPositions, v2.0
  CartographerInstanceLoot, v2.0
  CartographerInstanceMaps, v2.0
  CartographerInstanceNotes, v2.0
  CartographerLookNFeel, v2.0
  CartographerNotes, v2.0
  CartographerPOI, v2.0
  CartographerProfessions, v2.0
  CartographerWaypoints, v2.0
  CartographerZoneInfo, v2.0
  CensusPlus, v4.2.1
  Configator, v5.1.DEV.130
  CurseProfiler, v
  DBMCore, v
  DBMSpellTimers, v
  DebugLib, v5.1.DEV.130
  DoTimer, v4.2.4
  Enchantrix, v5.2.4013 (DingoII)
  EnchantrixBarker, v5.2.4013 (DingoII)
  EnhTooltip, v5.1.3715 (SnaggleTooth)
  FishingBuddy, v0.9.6j
  GatherMate, v1.0.13
  GnomishYellowPages, vr28
  GoGoMount, v0003001000
  GoingPrice, v3.0.3
  GoingPriceAllakhazam, v3.0.1233665258
  Informant, v5.2.4013 (DingoII)
  ItemDataCache, v1.303
  LightHeaded, v274
  MapNotes, v5.10.30000
  MapNotesBrowser, vv1.00.30000
  MapNotesForAtlas, v1.00.30000
  MapNotesIconLib, v1.04.30000
  MapNotesIconLibFancy, v
  MapNotesIconLibLegacy, v
  MapNotesIconLibNeptunia, v
  MapNotesIconLibNumbers, v
  MikScrollingBattleText, v5.3.33
  MobInfo2, v3.71
  Necrosis, v3.0 RC2
  NoJunk, v
  NotesUNeed, v6.53.30000
  Omen, v3.0.5
  Outfitter, v4.4b3
  Postal, v3.0.1
  QuestHelper, v0.86
  RatingBuster, v
  RecipeRadar, v1.29
  RecipeRadarTitan, v2.00.30000
  Recount, v
  SlideBar, v5.2.4013 (DingoII)
  Stubby, v5.2.4013 (DingoII)
  TalentedLoader, v
  Titan, v4.1.4.30000 (Revision 111)
  TitanAmmo, v4.1.4.30000
  TitanBag, v4.1.4.30000
  TitanClock, v4.1.4.30000
  TitanCoords, v4.1.4.30000
  TitanCritLine, v0.6.1
  TitanFriends, v3.0.0
  TitanGoldTracker, v4.1.4.30000
  TitanGuild, v3.6b
  TitanHonorGrind, v5.2.30000
  TitanHonorMarks, v2.1.6
  TitanItemBonuses, v4.1.4.30000
  TitanItemDed, v4.0.3
  TitanLootType, v4.1.4.30000
  TitanPerformance, v4.1.4.30000
  TitanRegen, v4.1.4.30000
  TitanRepair, v4.1.4.30000
  TitanReputation, v2.0
  TitanTradeCooldown, v3.1.5.30000
  TitanVolume, v4.1.4.30000
  TitanXP, v4.1.4.30000
  TomTom, v174
  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=ec6)

Please provide any additional information below.