After loading Durotar 1-12 Orc and Troll Horde Dungeon Leveling guide I recieved this error:

Date: 2010-10-24 11:41:46
ID: 1
Error occured in: Global
Count: 1
Message: ...erface\AddOns\DugisGuideViewerZ\DugisGuideViewe r.lua line 1628:
attempt to index global 'SmallFrameTooltip' (a nil value)
Debug:
[C]: ?
...erface\AddOns\DugisGuideViewerZ\DugisGuideViewe r.lua:1628: GetToolTipSize()
...erface\AddOns\DugisGuideViewerZ\DugisGuideViewe r.lua:1685: Tooltip_OnEnter()
[string "*:OnEnter"]:1:
[string "*:OnEnter"]:1
AddOns:
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
AucStatHistogram, v5.9.4960 (WhackyWallaby)
AucStatiLevel, v5.9.4960 (WhackyWallaby)
AucStatPurchased, v5.9.4960 (WhackyWallaby)
AucStatSales, v5.9.4960.2842
AucStatSimple, v5.9.4960 (WhackyWallaby)
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
Babylonian, v5.1.DEV.130
BeanCounter, v5.9.4960 (WhackyWallaby)
Carbonite, v4.012
CarboniteTransfer, v1.01
Configator, v5.1.DEV.282
DebugLib, v5.1.DEV.275
DugisGuideViewerZ, v4.32.4
Enchantrix, v5.9.4960 (WhackyWallaby)
EnchantrixBarker, v5.9.4960 (WhackyWallaby)
Informant, v5.9.4960 (WhackyWallaby)
SlideBar, v5.9.4960 (WhackyWallaby)
Stubby, v5.9.4960 (WhackyWallaby)
TomTom, vv40000-1.0.0
BlizRuntimeLib_enUS v4.0.1.40000 <us>
(ck=613)

Possible confliction with another Addon?