WowAce

What steps will reproduce the problem?

Just logging off apparently (or reloading the UI). It happens at UI unload, you can only see this error if you have buggrabber and bugsack.

Error log:

1x FlightHUD-0.9.2\FlightHUD.lua:1288: bad argument #1 to 'pairs' (table expected, got nil)
FlightHUD-0.9.2\FlightHUD.lua:1288: in function `?'
FlightHUD-0.9.2\FlightHUD.lua:891: in function <FlightHUD\FlightHUD.lua:891>

Locals:
self = <table> {
 SetDefaultModuleLibraries = <function> @ Ace3\AceAddon-3.0\AceAddon-3.0.lua:381:
 LastSwimming = false
 RemoveQuestHelperCallback = <function> @ FlightHUD\FlightHUD.lua:1508:
 mapicon_OnEnter = <function> @ FlightHUD\FlightHUD.lua:1416:
 ToggleHUD = <function> @ FlightHUD\FlightHUD.lua:1378:
 baseName = "FlightHUD"
 ResetAll = <function> @ FlightHUD\FlightHUD.lua:954:
 RemoveAllWaypoints = <function> @ FlightHUD\FlightHUD.lua:1492:
 CompassHeadingImage2 = <unnamed> {}
 enabled = true
 MODIFIER_STATE_CHANGED = <function> @ FlightHUD\FlightHUD.lua:907:
 OnShow = <function> @ FlightHUD\FlightHUD.lua:1392:
 OnDragStop = <function> @ FlightHUD\FlightHUD.lua:926:
 SetDefaultModulePrototype = <function> @ Ace3\AceAddon-3.0\AceAddon-3.0.lua:423:
 ShowCompassImage = false
 defaultModuleState = true
 IsEnabled = <function> @ Ace3\AceAddon-3.0\AceAddon-3.0.lua:465:
 UNIT_EXITED_VEHICLE = <function> @ FlightHUD\FlightHUD.lua:1263:
 DisableModule = <function> @ Ace3\AceAddon-3.0\AceAddon-3.0.lua:364:
 mounted = false
 WORLD_MAP_UPDATE = <function> @ FlightHUD\FlightHUD.lua:1427:
 HeadingText = <unnamed> {}
 RegisterMessage = <function> @ Ace3\CallbackHandler-1.0\CallbackHandler-1.0.lua:118:
 UnregisterMessage = <function> @ Ace3\CallbackHandler-1.0\CallbackHandler-1.0.lua:181:
 ShowPitchImage = false
 flying = false
 db = <table> {}
 UNIT_AURA = <function> @ FlightHUD\FlightHUD.lua:1295:
 EventCheck = <function> @ FlightHUD\FlightHUD.lua:1325:
 SetEnabledState = <function> @ Ace3\AceAddon-3.0\AceAddon-3.0.lua:438:
 SetupQuestHelperCallback = <function> @ FlightHUD\FlightHUD.lua:1502:
 enabledState = true
 ZONE_CHANGED_NEW_AREA = <function> @ FlightHUD\FlightHUD.lua:1400:
 RegisterEvent = <function> @ Ace3\CallbackHandler-1.0\CallbackHandler-1.0.lua:118:
 IsShowing = false
 IterateModules = <function> @ Ace3\AceAddon-3.0\AceAddon-3.0.lua:451:
 waypoints = <table> {}
 PLAYER_LOGOUT = <function> @ FlightHUD\FlightHUD.lua:1287:
 OnInitialize = <function> @ FlightHUD\FlightHUD.lua:371:
 NewModule = <function> @ Ace3\AceAddon-3.0\AceAddon-3.0.lua:255:
 GetModule = <function> @ Ace3\AceAddon-3.0\AceAddon-3.0.lua:230:
 mapicon_OnClick = <function> @ FlightHUD\FlightHUD.lua:1411:
 defaultModuleLibraries = <table> {}
 OnUpdate = <function> @ FlightHUD\FlightHUD.lua:992:
 UnregisterChatCommand = <function> @ Ace3\AceConsole-3.0\AceConsole-3.0.lua:111:
 PitchText = <unnamed> {}
 EditFrame = <unnamed> {}
 EnableModule = <function> @ Ace3\AceAddon-3.0\AceAddon-3.0.lua:346:
 PitchImage = <unnamed> {}
 timage = <unnamed> {}
 GetName = <function> @ Ace3\AceAddon-3.0\AceAddon-3.0.lua:298:
 swimming = false
 AddQHWaypoint = <function> @ FlightHUD\FlightHUD.lua:1443:
 DummyFrame = FlightHUDDummyFrame {}
 name = "FlightHUD"
 ResetWaypoints = <function> @ FlightHUD\FlightHUD.lua:1268:
 SpeedText = <unnamed> {}
 mapicon_OnLeave = <function> @ FlightHUD\FlightHUD.lua:1423:
 Disable = <function> @ Ace3\AceAddon-3.0\AceAddon-3.0.lua:328:
 CompassHeadingImage1 = <unnamed> {}
 FlightHUDFrame = FlightHUDFrame {}
 CoordinatesText = <unnamed> {}
 optionsFrames = <table> {}
 GetFrom = "player"
 ShowCompassGraphic = false
 Print = <function> defined @Ace3\AceConsole-3.0\AceConsole-3.0.lua:
  ---