WowAce

What steps will reproduce the problem?
1. Install dev alpha
2. Restart client and login

What version of the product are you using?
r508

Do you have an error log of what happened?
Date: 2014-02-16 12:28:01
ID: 1
Error occured in: Global
Count: 1
Message: ..\AddOns\Skada\modules\DamageTaken.lua line 5:
   Usage: NewModule(name, [prototype, [lib, lib, lib, ...]): 'name' - Module 'Damage taken' already exists.
Debug:
   [C]: ?
   Ace3\AceAddon-3.0\AceAddon-3.0.lua:270: NewModule()
   Skada\modules\DamageTaken.lua:5: ?()
   Skada\Skada.lua:2230:
      Skada\Skada.lua:2208
   (tail call): ?
   [C]: ?
   [string "safecall Dispatcher[1]"]:9:
      [string "safecall Dispatcher[1]"]:5
   (tail call): ?
   Ace3\AceAddon-3.0\AceAddon-3.0.lua:558: EnableAddon()
   Ace3\AceAddon-3.0\AceAddon-3.0.lua:651:
      Ace3\AceAddon-3.0\AceAddon-3.0.lua:636
   [C]: LoadAddOn()
   ..\FrameXML\UIParent.lua:307: UIParentLoadAddOn()
   ..\FrameXML\UIParent.lua:381: TimeManager_LoadUI()
   ..\FrameXML\UIParent.lua:741:
      ..\FrameXML\UIParent.lua:706
Locals:
None
AddOns:
  BlizzBugsSuck, v@project-version@
  InspectFix, v@project-version@
  Swatter, v5.19.5445 (QuiescentQuoll)
  NPCScan, v5.4.2.6
  Ace3, v
  ACP, v3.4.7
  AddonLoader, v2.0.1
  AtlasLoot, vv7.07.01
  AtlasLootCataclysm, vv7.07.01
  AtlasLootClassicWoW, vv7.07.01
  AtlasLootLoader, vv7.07.01
  AtlasLootMistsofPandaria, vv7.07.01
  AtlasLootSource, vv0.3
  BattlePetBreedID, v1.1.1
  BattlePetCount, v1.7.4
  BattlePetQualityNotifier, v1.3.0
  BetterBlizzOptions, v
  BOPCraftConfirm, v@project-version@
  BrokerItemRack, v1.9
  BrokeroRA3, v1.0
  BrokerPortals, v1.8.34
  CalendarKeyboardFixer, v@project-version@
  CastMount, v1.4
  ChatTabDockLock, v@project-version@
  ChocolateBar, vv2.4.2
  CinematicCanceler, v@project-version@
  CopyThat, v
  DBMCore, v
  DBMLDB, v
  DBMStatusBarTimers, v
  DebugLib, v5.1.DEV.337(/embedded)
  DomDom, v
  DomDomSoundPack01, v
  DomDomSoundPack02, v
  DomDomSoundPack03, v
  DomDomSoundPack04, v
  EnhancedStackSplit, v50400-1
  EnsidiaFails, v@project-revision@
  FlaresThatWork, v@project-version@
  GoGoMount, v5.4.10
  GTFO, v4.27.2
  GuildDelta, v5.4.2
  HealBot, v5.4.2.1
  ItemRack, v
  LFGCallToArmsBroker, v1.0.6
  LibAboutPanel, v1.52
  LibQTip10, vr165-release
  LibSharedMedia30, v3.0-81
  MacroBank, v1.11
  Mapster, v1.5.6.1
  Omen, v3.1.8
  oRA3, v
  OscarMods, v1.0
  Overachiever, v0.73
  PetBattleTactician, vv0.3-1-g9155da6
  PetBattleTeams, v3.2.5
  PickPocketTimer, v50400-1
  Prat30, v3.5.7
  Prat30Libraries, v
  Quartz, v3.1.4
  QuestLogCollapse, v
  QuestLogCollapseAllButton, vv1.2
  RareCoordinator, v
  RepairBroker, v5.4.0
  Skada, v@project-version@
  SkadaAvoidanceMitigation, v@project-version@
  SkadaDamageTaken, v1.0
  SkadaEnsidiaFails, v1.2.7
  SkadaFriendlyFire, v@project-version@
  skadascroll, v@project-version@
  Stubby, v5.19.5445 (QuiescentQuoll)
  TipTac, v13.09.21
  TipTacTalents, v13.09.21
  TomTom, vv50400-1.0.0
  TradeForwarder, v2.20
  WeakAuras, v2.0.3
  XLoot, vz14g-release
  XLootFrame, vz14g-release
  BlizRuntimeLib_enUS v5.4.2.50400 <us>
  (ck=7ff)

Please provide any additional information below.

Happens on every relog.

Assuming you used CC to update as the external modules are gone, but for some reason, you still have a "SkadaDamageTaken" external addon. Is that something you created? If not, just delete it. Maybe modifying it confused CC.

Yea looks like a stale copy was left sitting around. Deleting fixed it.

I'm concerned that this happened every login. Was that on the same character? I'm going to move the DisableAddOn call to init to prevent any possibilities of an error preventing it running,

Yes, it was every login or reload on the same character, didn't try other characters (and the problem is now gone).

The problem arose because I updated via SVN and it failed to delete the files in that directory, which is why there ended up a duplicate module at the top level. I know CC sometimes fails to remove directories, but not sure what causes that or what state it would leave things in.