Error got when editing the Party frame’s scale

Message: ...terface\AddOns\ShadowedUnitFrames\modules\layout.lua:338: attempt to call method 'SetHorizTile' (a nil value)
Time: 04/20/10 22:58:33
Count: 2
Stack: ...terface\AddOns\ShadowedUnitFrames\modules\layout.lua:338: in function `SetupBars'
...terface\AddOns\ShadowedUnitFrames\modules\layout.lua:112: in function `Load'
...terface\AddOns\ShadowedUnitFrames\modules\layout.lua:95: in function `Reload'
Interface\AddOns\ShadowedUF_Options\config.lua:210: in function <Interface\AddOns\ShadowedUF_Options\config.lua:196>
Interface\AddOns\ShadowedUF_Options\config.lua:241: in function <Interface\AddOns\ShadowedUF_Options\config.lua:222>
Interface\AddOns\ShadowedUF_Options\config.lua:2777: in function <Interface\AddOns\ShadowedUF_Options\config.lua:2776>
(tail call): ?
[C]: ?
[string "safecall Dispatcher[2]"]:9: in function <[string "safecall Dispatcher[2]"]:5>
(tail call): ?
...nfig-3.0\AceConfigDialog-3.0\AceConfigDialog-3.0.lua:796: in function <...nfig-3.0\AceConfigDialog-3.0\AceConfigDialog-3.0.lua:611>
...nfig-3.0\AceConfigDialog-3.0\AceConfigDialog-3.0.lua:843: in function <...nfig-3.0\AceConfigDialog-3.0\AceConfigDialog-3.0.lua:836>
(tail call): ?
[C]: ?
[string "safecall Dispatcher[3]"]:9: in function <[string "safecall Dispatcher[3]"]:5>
(tail call): ?
...e\AddOns\ButtonFacade\Libs\AceGUI-3.0\AceGUI-3.0.lua:326: in function `Fire'
...down\Libs\AceGUI-3.0\widgets\AceGUIWidget-Slider.lua:73: in function <...down\Libs\AceGUI-3.0\widgets\AceGUIWidget-Slider.lua:66>
 
Locals: self = <table> {
 SetupBars = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:329
 CheckMedia = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:48
 SetupFrame = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:285
 LoadSML = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:136
 ReverseDirection = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:192
 ToggleVisibility = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:68
 GetRelative = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:180
 mediaPath = <table> {
 }
 PositionWidgets = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:433
 SetupText = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:377
 MediaRegistered = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:58
 GetRelativeAnchor = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:197
 SetupFontString = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:361
 GetAuraGrowth = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:188
 Reload = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:88
 SetBarVisibility = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:76
 GetJustify = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:163
 GetPoint = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:176
 MediaForced = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:10
 GetColumnGrowth = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:184
 GetSplitRelativeAnchor = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:219
 Load = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:104
 AnchorFrame = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\layout.lua:235
}
frame = SUFHeaderpartyUnitButton4 {
 ignoreAnchor = true
 portrait = <unnamed> {
 }
 indicators = <unnamed> {
 }
 0 = <userdata>
 unitID = 4
 unitRealType = "party"
 portraitModel = <unnamed> {
 }
 unit = "party4"
 auras = <table> {
 }
 UnregisterAll = <function> defined @Interface\AddOns\ShadowedUnitFrames\modules\units.lua:91
 configUnitID = 4
 vehicleUnit = "part