WowAce

What steps will reproduce the problem?
1. A Lua error appears every time i log in.
2. It appears only one time.
3. Can be an addon conflict?

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

What version of the product are you using?
im using the last version of your product.

Do you have an error log of what happened?
yes i got it.
Date: 2010-02-27 08:25:41
ID: -44
Error occured in: Global
Count: 6
Message: ...nterface\AddOns\ShadowedUnitFrames\modules\units.lua line 703:
   attempt to perform arithmetic on field 'groupsPerRow' (a nil value)
Debug:
   [C]: ?
   ...nterface\AddOns\ShadowedUnitFrames\modules\units.lua:703: SetHeaderAttributes()
   ...nterface\AddOns\ShadowedUnitFrames\modules\units.lua:831: LoadSplitGroupHeader()
   ...nterface\AddOns\ShadowedUnitFrames\modules\units.lua:1001: InitializeFrame()
   ...ace\AddOns\ShadowedUnitFrames\ShadowedUnitFrames.lua:139: LoadUnits()
   ...ace\AddOns\ShadowedUnitFrames\ShadowedUnitFrames.lua:77: OnInitialize()
   ...ace\AddOns\ShadowedUnitFrames\ShadowedUnitFrames.lua:529:
      ...ace\AddOns\ShadowedUnitFrames\ShadowedUnitFrames.lua:527
AddOns:
  Swatter, v5.7.4568 (KillerKoala)
  acbAuras, v09.12.16
  acbBattleGround, v09.12.16
  acbCastBar, v09.12.16
  acbMirror, v09.12.16
  acbSwing, v09.12.16
  aMail, v1.0
  Atlas, v1.15.2
  AtlasBattlegrounds, v1.15.2
  AtlasDungeonLocs, v1.15.2
  AtlasOutdoorRaids, v1.15.2
  AtlasTransportation, v1.15.2
  AtlasLoot, vv5.10.00
  AtlasLootFu, vv5.10.00
  AucAdvanced, v5.7.4568 (KillerKoala)
  AucFilterBasic, v5.7.4568 (KillerKoala)
  AucFilterOutlier, v5.7.4568.2531
  AucMatchUndercut, v5.7.4568.2531
  AucStatClassic, v5.7.4568 (KillerKoala)
  AucStatHistogram, v5.7.4568 (KillerKoala)
  AucStatiLevel, v5.7.4568 (KillerKoala)
  AucStatPurchased, v5.7.4568 (KillerKoala)
  AucStatSales, v5.7.4568.2842
  AucStatSimple, v5.7.4568 (KillerKoala)
  AucStatStdDev, v5.7.4568 (KillerKoala)
  AucStatWOWEcon, v5.7.4568.2530
  AucUtilAHWindowControl, v5.7.4568.3311
  AucUtilAppraiser, v5.7.4568.2530
  AucUtilAskPrice, v5.7.4568.3175
  AucUtilAutoMagic, v5.7.4568.3142
  AucUtilCompactUI, v5.7.4568.2530
  AucUtilEasyBuyout, v5.7.4568.3583
  AucUtilFixAH, v5.7.4568 (KillerKoala)
  AucUtilGlypher, v5.7.4568.2545
  AucUtilItemSuggest, v5.7.4568.3108
  AucUtilPriceLevel, v5.7.4568.2545
  AucUtilScanButton, v5.7.4568.2530
  AucUtilScanFinish, v5.7.4568.2530
  AucUtilScanProgress, v5.7.4568.2530
  AucUtilSearchUI, v5.7.4568.3655
  AucUtilSimpleAuction, v5.7.4568.4553
  AucUtilVendMarkup, v5.7.4568.2530
  AzCastBar, v09.12.16
  Babylonian, v5.1.DEV.130
  Bagnon, v2.12.3
  BagnonBrighter, v1.2.0
  BagnonForever, v1.1.2
  BagnonTooltips, v
  BeanCounter, v5.7.4568 (KillerKoala)
  BonusScanner, v5.3
  Btex, v2.9.3
  ButtonFacade, v3.3.300
  ButtonFacadeApathy, v3.3.75
  ButtonFacadeCaith, v3.3.57
  ButtonFacadeCards, v3.3.0
  ButtonFacadeDarion, v3.0.3.2
  ButtonFacadeDek, v3.0.47
  ButtonFacadeDek2, v3.0.47
  ButtonFacadeElegance, v3.3.0
  ButtonFacadeEntropy, v3.3.57
  ButtonFacadeGears, v3.3.47
  ButtonFacadeJigsaw, v3.3.0
  ButtonFacadeLiteFlat, v3.0.2
  ButtonFacadeLiteStep, v3.3.47
  ButtonFacadeOnyx, v3.3.57
  ButtonFacadeSerenity, v3.3.56
  ButtonFacadesimpleSquare, v1.1
  ButtonFacadeSion, v
  ButtonFacadeSleek, v3.3.0
  ButtonFacadeSvelte, v1.0
  ButtonFacadeTones, v3.3.0
  ButtonFacadeTrinity, v30300.1
  ButtonFacadeVista, v1.0.6
  Buttonrange, v
  Carbonite, v3.32
  CarboniteTransfer, v1.01
  Chatter, v1.0
  Configator, v5.1.DEV.130
  DBMCore, v
  DebugLib, v5.1.DEV.130
  Dominos, v1.16.2
  DominosCast, v
  DominosRoll, v
  DominosTotems, v
  DominosXP, v
  eAlign, v
  ElkBuffBars, v2.2.5-150
  Enchantrix, v5.7.4568 (KillerKoala)
  EnchantrixBarker, v5.7.4568 (KillerKoala)
  GatherMate, vv1.22
  GatherMateSharing, v1.3
  GearScore, v3.1.14 - Beta
  Gladius, vv1.1.0
  Heatsink, v
  IgnoreMore, v1.1.0
  Informant, v5.7.4568 (KillerKoala)
  MikScrollingBattleText, v5.4.75
  Nameplates, v
  NeedToKnow, v3.0.0
  NiceDamage, v20400
  Omen, v3.0.9
  OmniCC, v2.5.9
  pError, v30300.4-Release
  Recount, v
  SexyMap, v
  ShadowedUnitFrames, vv3.2.5
  SlideBar, v5.7.4568 (KillerKoala)
  SpeedyActions, v
  Stubby, v5.7.4568 (KillerKoala)
  TipTop, v2.3.2
  Titan, v4.3.4.30300 - Revision 345
  TitanAmmo, v4.3.4.30300
  TitanBag, v4.3.4.30300
  TitanClock, v4.3.4.30300
  TitanCoords, v4.3.4.30300
  TitanGoldTracker, v4.3.4.30300
  TitanLootType, v4.3.4.30300
  TitanPerformance, v4.3.4.30300
  TitanRegen, v4.3.4.30300
  TitanRepair, v4.3.4.30300
  TitanVolume, v4.3.4.30300
  TitanXP, v4.3.4.30300
  BlizRuntimeLib_enUS v3.3.2.30300 <eu>
  (ck=d8c)

Please provide any additional information below.

This should also already be fixed, try the alpha: http://www.wowace.com/addons/shadowed-unit-frames/files/8485-v3-2-5-12-g54f17e0/

I thank you for your fast response :)...with this alpha i no longer have this error! ty alot I love your UI...keep on the good work! :D Alk90