Addons preventing aura cancels?

[Vook]

So lately, it seems a few of my addons are preventing me from clicking off buffs, bringing up a UI error when I try to (despite the fact that I've got UI error window disabled). These addons are:

Auctioneer (Auc-Advanced)
AuctionLite
Chatter

Why the hell are Auction and Chat addons screwing with buffs? And I'm sure it's them, because as soon as I disable all three of them (and I tested disabling one at a time), I can click off buffs just fine.

This is the error I get when trying to click off a buff, and it only happens the first time:

Date: 2010-12-29 14:17:14
ID: 3
Error occured in: AddOn: AuctionLite
Count: 1
Message: Error: AddOn AuctionLite attempted to call a forbidden function (CancelUnitBuff()) from a tainted execution path.
Debug:
   [C]: CancelUnitBuff()
   ..\FrameXML\BuffFrame.lua:280: BuffButton_OnClick()
   [string "*:OnClick"]:1:
      [string "*:OnClick"]:1
AddOns:
  Zoom, v
  Swatter, v5.9.4960 (WhackyWallaby)
  AucAdvanced, v5.9.4960 (WhackyWallaby)
  AucFilterBasic, v5.9.4960 (WhackyWallaby)
  AucFilterOutlier, v5.9.4960.2531
  AucMatchUndercut, v5.9.4960.2531
  AucStatSales, v5.9.4960.2842
  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
  AuctionLite, v1.7.1
  Babylonian, v5.1.DEV.130
  Chatter, v1.0
  Configator, v5.1.DEV.278
  DBMCore, v
  DebugLib, v5.1.DEV.275
  Gnosis, vv2.03
  Grid, vr1361
  GridIndicatorCornerIcons, v40000-1
  GridIndicatorSideIcons, v40000-1
  GridStatusRaidIcons, v30200-2
  HideBlizzard, v1.0.51
  Omen, v3.0.9
  PowerAuras, v4.4
  RazerNaga, v1.0.1
  RazerNagaCast, v
  RazerNagaRoll, v
  RazerNagaTotems, v
  RazerNagaXP, v
  ShadowedUnitFrames, vv3.3.1
  Skada, v1.2-27
  SkadaAbsorbs, v1.0
  SkadaCC, v1.0
  SkadaDamage, v1.0
  SkadaDamageTaken, v1.0
  SkadaDeaths, v1.0
  SkadaDebuffs, v1.0
  SkadaDispels, v1.0
  SkadaEnemies, v1.0
  SkadaFailbot, v1.0
  SkadaHealing, v1.0
  SkadaPower, v1.0
  SkadaThreat, v1.0
  Stubby, v5.9.4960 (WhackyWallaby)
  BlizRuntimeLib_enUS v4.0.3.40000 <us>
  (ck=6b4)

[Spottswoode]

I read an explanation of this issue on the DBM support forums from the author. Basically, there are two ways to code an addon in LUA; one is using global variables and function names and the other is using private limited-scope variables and function names. In the former, if the coder uses a global variable or function name he runs the risk of having that variable or function conflict with another variable of the same name within blizzard's add-on code. This issue is also known as "tainting".

I'm not using the addons that you are, but i'm experiencing the same issue when trying to cancel an aura or inspect someone. In your case, since you have identified the addon(s), you could appeal to the author to fix his tainting issue or simply stop using the addon(s).

by the way, the reason you are getting that error pop-up even though the blizzard setting is turned off, is because you have Swatter installed. It's intended to a 'friendly' lua error handler and I believe it comes installed with quite a few addons, including auctioneer. you can type /swat to see it's options

[Woogs]

Spottswoode, that is not right. That error means you are calling a protected function from tainted code (untrusted; e.g. addon code). CancelUnitBuff() was changed to a protected function between 4.0.0 and 4.0.3. Try updating your addons.

[Deleted]

Spottswoode, that is not right. That error means you are calling a protected function from tainted code (untrusted; e.g. addon code). CancelUnitBuff() was changed to a protected function between 4.0.0 and 4.0.3. Try updating your addons.

He's very much right. Look at the debug stack printed, it's a direct function call from frameXML. Only way this can be caused is by tainting of a var it uses.

[Vook]

Spottswoode, that is not right. That error means you are calling a protected function from tainted code (untrusted; e.g. addon code). CancelUnitBuff() was changed to a protected function between 4.0.0 and 4.0.3. Try updating your addons.

All of them are updated to the latest versions, except Chatter, which hasn't been updated since 3.2 or so...I think. But this error comes from Auctioneer too, which was updated in 4.0.3.