What steps will reproduce the problem?
1. Trained 'Master Riding' in SW (not sure if location matters)

What is the expected output? What do you see instead?
LA window did not pop up. Got error message instead.

What version of the product are you using?
Learning Aid 1.11.1 Alpha 1

Do you have an error log of what happened?
ate: 2011-04-18 01:18:19
ID: 1
Error occured in: Global
Count: 1
Message: ..\AddOns\LearningAid\Spell.lua line 284:
   attempt to concatenate field 'name' (a nil value)
Debug:
   [C]: ?
   LearningAid\Spell.lua:284 DiffSpellBook()
   LearningAid\Events.lua:171 ?()
   LearningAid\LearningAid.lua:114
      LearningAid\LearningAid.lua:113
AddOns:
  Swatter, v3.2.3 (<%codename%>)
  NPCScan, v4.0.3.6
  Ace3, v
  AckisRecipeList, v2.2.3-57-g1770173
  ACP, vr140
  AdvancedTradeSkillWindow, v
  Altoholic, v4.0.006b
  Atlas, v1.18.3
  AtlasBattlegrounds, v1.18.3
  AtlasDungeonLocs, v1.18.3
  AtlasOutdoorRaids, v1.18.3
  AtlasTransportation, v1.18.3
  AtlasQuest, v4.6.2
  AucAdvanced, v5.9.4960 (WhackyWallaby)
  AucFilterBasic, v5.9.4960 (WhackyWallaby)
  AucFilterOutlier, v5.9.4960.2531
  AucMatchUndercut, v5.9.4960.2531
  AucScanData, v5.9.4960 (WhackyWallaby)
  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
  AutoDing, v4.1
  Automaton, v1.3.10
  Babylonian, v5.1.DEV.130
  BadBoy, vv6.461
  BadBoyCCleaner, v3.25
  BadBoyGuilded, v1.28
  BadBoyLevels, v2.76
  BeanCounter, v5.9.4960 (WhackyWallaby)
  BeQuiet, v1.1.0
  BrokerSkills, v1.0
  BuyEmAll, v3.0.5
  Configator, v5.1.DEV.282
  CurseProfiler, v
  DataStore, v4.0.001
  DataStoreAchievements, v4.0.001
  DataStoreAuctions, v4.0.001
  DataStoreCharacters, v4.0.006
  DataStoreContainers, v4.0.001
  DataStoreCrafts, v4.0.001
  DataStoreCurrencies, v4.0.001
  DataStoreInventory, v4.0.005b
  DataStoreMails, v4.0.001
  DataStorePets, v4.0.001
  DataStoreQuests, v4.0.001
  DataStoreReputations, v4.0.001
  DataStoreSpells, v4.0.001
  DataStoreStats, v4.0.001
  DataStoreTalents, v4.0.001
  DebugLib, v5.1.DEV.275
  Enchantrix, v5.9.4960 (WhackyWallaby)
  EnchantrixBarker, v5.9.4960 (WhackyWallaby)
  EveryQuest, v2.4.r217-release
  EveryQuestEasternKingdoms, vr217-release
  EveryQuestKalimdor, vr217-release
  FishingBuddy, v1.0.1
  FlightMap, v4.0.3-beta
  Gatherer, v3.2.3
  GatherMate2, v1.12-1-g3603621
  GreedyQuester, v4.0.3
  Informant, v5.9.4960 (WhackyWallaby)
  KarniCrap, v3.2.1
  LearningAid, v1.11.1 Alpha
  LightHeaded, v331
  LightHeadedDataE, v331
  LightHeadedDataQIDNames, v331
  Livestock, v1.3.8
  MoveAnything, v12.1.4
  Odyssey, v4.0.002
  Omen, v3.1.0
  Outfitter, v5.2
  Pawn, v1.5.8
  Postal, v3.4.4
  Quartz, v3.0.5
  Rawr, v0.65
  Recount, v
  StatScore, v4.0.6.31
  Stubby, v5.9.4960 (WhackyWallaby)
  Titan, v5.0.3.40000 - Revision 519
  TitanBag, v5.0.3.40000
  TitanGold, v5.0.3.40000
  TitanRepair, v5.0.3.40000
  TitanVolume, v5.0.3.40000
  TomTom, vv40000-1.2.6
  TradeskillInfo, v2.1.2
  BlizRuntimeLib_enUS v4.0.6.40000 <us>
  (ck=c3f)