What steps will reproduce the problem?
1. Initiated combat
2.
3.

What is the expected output? What do you see instead?  Game play continued, but got error message.

What version of the product are you using?  Per curse client, I'm "up to date"

Do you have an error log of what happened?  Following:

Date: 2013-08-19 11:05:08
ID: 1
Error occured in: AddOn: Volumizer
Count: 3
Message: Note: AddOn Volumizer attempted to call a protected function (CompactRaidFrame1:Show()) during combat lockdown.
Debug:
   [C]: Show()
   ..\FrameXML\CompactUnitFrame.lua:282 CompactUnitFrame_UpdateVisible()
   ..\FrameXML\CompactUnitFrame.lua:240 CompactUnitFrame_UpdateAll()
   ..\FrameXML\CompactUnitFrame.lua:97
      ..\FrameXML\CompactUnitFrame.lua:44
Locals:
None
AddOns:
  Swatter, v4.3.1 (<%codename%>)
  NPCScan, v5.0.0.5
  NPCScanOverlay, v5.0.0.3
  NPCScanOverlayBroker, v1.2.3
  AckisRecipeList, v2.5.0
  AckisRecipeListQuickScan, v5.3.0.-1.0.8
  ACP, v3.4.3
  Archy, v1.8.42
  Arh, v1.2.3
  Armory, vv10.6.0
  ArmoryGuildBank, vv10.6.0
  AskMrRobot, v1.0.9.0
  Atlas, v1.25.00
  AtlasClassicWoW, v1.25.00
  AtlasDungeonLocs, v1.25.00
  AtlasScenarios, v1.25.01
  AtlasTransportation, v1.25.01
  AtlasWorldEvents, v3.04
  AtlasLootLoader, vv7.06.00
  AucAdvanced, v5.17.5413 (NeedyNoddy)
  AucFilterBasic, v5.17.5413 (NeedyNoddy)
  AucFilterOutlier, v5.17.5413.5347(5.17/embedded)
  AucMatchUndercut, v5.17.5413.5364(5.17/embedded)
  AucScanData, v5.17.5413 (NeedyNoddy)
  AucStatHistogram, v5.17.5413 (NeedyNoddy)
  AucStatiLevel, v5.17.5413 (NeedyNoddy)
  AucStatPurchased, v5.17.5413 (NeedyNoddy)
  AucStatSales, v5.17.5413.5376(5.17/embedded)
  AucStatSimple, v5.17.5413 (NeedyNoddy)
  AucStatStdDev, v5.17.5413 (NeedyNoddy)
  AucStatWOWEcon, v5.17.5413.5323(5.17/embedded)
  AucUtilAHWindowControl, v5.17.5413.5347(5.17/embedded)
  AucUtilAppraiser, v5.17.5413.5393(5.17/embedded)
  AucUtilAskPrice, v5.17.5413.5347(5.17/embedded)
  AucUtilAutoMagic, v5.17.5413.5392(5.17/embedded)
  AucUtilCompactUI, v5.17.5413.5400(5.17/embedded)
  AucUtilEasyBuyout, v5.17.5413.5347(5.17/embedded)
  AucUtilFixAH, v5.17.5413 (NeedyNoddy)
  AucUtilItemSuggest, v5.17.5413.5365(5.17/embedded)
  AucUtilPriceLevel, v5.17.5413.5365(5.17/embedded)
  AucUtilScanButton, v5.17.5413.5403(5.17/embedded)
  AucUtilScanFinish, v5.17.5413.5347(5.17/embedded)
  AucUtilScanProgress, v5.17.5413.4979(5.17/embedded)
  AucUtilScanStart, v5.17.5413.5347(5.17/embedded)
  AucUtilSearchUI, v5.17.5413.5373(5.17/embedded)
  AucUtilSimpleAuction, v5.17.5413.5388(5.17/embedded)
  AucUtilVendMarkup, v5.17.5413.4828(5.17/embedded)
  Babylonian, v5.1.DEV.332(/embedded)
  BadBoy, v12.041
  BadBoyHistory, v1.33
  BagBrother, v
  Bagnon, v5.3.6
  BagnonAccountSearch, v1.7.0
  BagnonScrap, v
  BarProfiler, v0.3.2a
  Bartender4, v4.5.10
  Bartender4Dualspec, v
  BeanCounter, v5.17.5413 (NeedyNoddy)
  BittensSpellFlashHunter, v3.1.1
  BittensSpellFlashLibrary, v4.13.7
  BrokerCurrency, v5.3.0-1.3.1
  BrokerDurabilityInfo, v1.17
  BrokerMicroMenu, vv1.3.5
  BrokeruClock, v3.3.6
  BrokerXPBar, v1.7 r044
  Carbonite, v5.1.6
  CarboniteTransfer, v1.01
  ChocolateBar, vv2.4.1
  Configator, v5.1.DEV.344(/embedded)
  DBMCore, v
  DBMLDB, v
  DebugLib, v5.1.DEV.337(/embedded)
  DungeonHelper, vv2.3.5
  eAlign, v
  Enchantrix, v5.17.5413 (NeedyNoddy)
  EnchantrixBarker, v5.17.5413 (NeedyNoddy)
  FBBroker, v1.19k
  FishingBuddy, v1.2o
  Gatherer, v4.3.1
  GathererDBWowhead, v1.0.2011-11-03
  GatherMate2, v1.26
  GCD, v11.0.1-release
  HomingDigeon, v1.3
  Informant, v5.17.5413 (NeedyNoddy)
  LibExtraTip, v5.12.DEV.350(/embedded)
  LightHeaded, v365
  LightHeadedDataC, v365
  LightHeadedDataE, v365
  LightHeadedDataQIDDesc, v365
  LightHeadedDataQIDNames, v365
  MikScrollingBattleText, v5.7.129
  MyRolePlay, v5.3.0.103
  NugComboBar, v
  Omen, v3.1.8
  pusikasspellflashhunter, v1.0-beta2
  RatingBuster, vr397
  Recount, v
  Scrap, v12.5
  ScrapMerchant, v
  SlideBar, v5.17.5413 (NeedyNoddy)
  SpellFlash, v6.8
  SpellFlashCore, v2.0.3
  Stubby, v5.17.5413 (NeedyNoddy)
  TipHelper, v5.12.DEV.351(/embedded)
  TomTom, vv50300-1.0.1
  Volumizer, v5.3.0-2.2
  WoWPro, v2.6.1
  WoWProAchievements, v2.6.1
  WoWProDailies, v2.6.1
  WoWProLeveling, v2.6.1
  WowProProfession, v2.6.1
  WoWProWorldEvents, v2.6.1
  BlizRuntimeLib_enUS v5.3.0.50300 <us>
  (ck=de8)

Please provide any additional information below.