DisplayArea Raising 'Incomplete area copy'

> A customer running on Citix gets the error below when a window is
> redrawn (I think it is a popup-menu that is closed). Does anyone
> recognise the problem? Could it be that VisualWorks tries to perform a
> screen operation (getting a 1x1 bitmap to determine the background
> color) that is not allowed on Citrix? We use VisualWorks 7.3.
>
>  
>
> Kind regards
>
> Runar Jordahl
>
>  
>
> ------------------------------------------------------------
>
> Unhandled Exception:
>
>             class: UnhandledException
>
>             creator: UnhandledException
>
>             errorString: Unhandled exception: Incomplete area copy
>
>             parameter: an Error
>
>  
>
> ------------------------------------------------------------
>
> Initial Context Stack Arguments:
>
> [1] TransientWindow(DisplaySurface)>>completeContentsOfArea:
>
>             Receiver: (id=6630) a TransientWindow 38773
>
>             Arg1: (id=14362) 0@0 corner: 1@1
>
> [3] MappedPalette>>at:ifAbsent:
>
>             Receiver: (id=6263) MappedPalette (ColorValue black
> (ColorValue red: 0.502014 green: 0.0 blue: 0....
>
>             Arg1: (id=16777215) 16777215
>
>             Arg2: (id=13995) BlockClosure [] in [] in
> GraphicsContext>>colorValueForPaint:
>
> [5] BlockClosure>>ensure:
>
>             Receiver: (id=5343) BlockClosure [] in
> GraphicsContext>>colorValueForPaint:
>
>             Arg1: (id=13075) BlockClosure [] in
> GraphicsContext>>colorValueForPaint:
>
> [6] ScreenGraphicsContext(GraphicsContext)>>colorValueForPaint:
>
>             Receiver: (id=14548) a ScreenGraphicsContext
>
>             Arg1: (id=7761) SymbolicPaint key: #backgroundColor
>
> [8] TransientWindow(Object)>>ifNil:ifNotNil:
>
>             Receiver: (id=6630) a TransientWindow 38773
>
>             Arg1: (id=11235) BlockClosure [] in SymbolicPaint>>asColorValue
>
>             Arg2: (id=2583) BlockClosure [] in SymbolicPaint>>asColorValue
>
> [9] SymbolicPaint>>asColorValue
>
>             Receiver: (id=7761) SymbolicPaint key: #backgroundColor
>
> [11] SymbolicPaint(Object)>>ifNotNil:
>
>             Receiver: (id=7761) SymbolicPaint key: #backgroundColor
>
>             Arg1: (id=1663) BlockClosure [] in
> BorderedWrapper>>lookPreferences
>
> [12] BorderedWrapper>>lookPreferences
>
>             Receiver: (id=9395) a BorderedWrapper on: a SubCanvas
>
> [13] SubCanvas(VisualPart)>>lookPreferences
>
>             Receiver: (id=3136) a SubCanvas
>
> [14] SpecWrapper(VisualPart)>>lookPreferences
>
>             Receiver: (id=10868) a SpecWrapper on: a BoundedWrapper on:
> a BG_BarChartView
>
> [15] SpecWrapper(WidgetWrapper)>>lookPreferences
>
>             Receiver: (id=10868) a SpecWrapper on: a BoundedWrapper on:
> a BG_BarChartView
>
> [16] BoundedWrapper(VisualPart)>>lookPreferences
>
>             Receiver: (id=9546) a BoundedWrapper on: a BG_BarChartView
>
> [17] BG_BarChartView(VisualPart)>>lookPreferences
>
>             Receiver: (id=3689) a BG_BarChartView
>
> [18] BG_BarChartView(BG_GriddedChartView)>>displayOn:
>
>             Receiver: (id=3689) a BG_BarChartView
>
>             Arg1: (id=9028) a ScreenGraphicsContext
>
> [19] BoundedWrapper>>displayOn:
>
>             Receiver: (id=9546) a BoundedWrapper on: a BG_BarChartView
>
>             Arg1: (id=9028) a ScreenGraphicsContext
>
> [20] SpecWrapper(Wrapper)>>displayOn:
>
>             Receiver: (id=10868) a SpecWrapper on: a BoundedWrapper on:
> a BG_BarChartView
>
>             Arg1: (id=9028) a ScreenGraphicsContext
>
> [21] SpecWrapper(WidgetWrapper)>>displayOn:
>
>             Receiver: (id=10868) a SpecWrapper on: a BoundedWrapper on:
> a BG_BarChartView
>
>             Arg1: (id=9028) a ScreenGraphicsContext
>
> [22] SubCanvas(CompositePart)>>displayOn:
>
>             Receiver: (id=3136) a SubCanvas
>
>             Arg1: (id=10134) a ScreenGraphicsContext
>
> [23] BorderedWrapper>>displayOn:
>
>             Receiver: (id=9395) a BorderedWrapper on: a SubCanvas
>
>             Arg1: (id=10134) a ScreenGraphicsContext
>
> [24] TabControlComposite(CompositePart)>>displayOn:
>
>             Receiver: (id=6821) a TabControlComposite
>
>             Arg1: (id=8294) a ScreenGraphicsContext
>
> [25] BoundedWrapper>>displayOn:
>
>             Receiver: (id=8244) a BoundedWrapper on: a TabControlComposite
>
>             Arg1: (id=8294) a ScreenGraphicsContext
>
> [26] SpecWrapper(Wrapper)>>displayOn:
>
>             Receiver: (id=12713) a SpecWrapper on: a BoundedWrapper on:
> a TabControlComposite
>
>             Arg1: (id=8294) a ScreenGraphicsContext
>
> [27] SpecWrapper(WidgetWrapper)>>displayOn:
>
>             Receiver: (id=12713) a SpecWrapper on: a BoundedWrapper on:
> a TabControlComposite
>
>             Arg1: (id=8294) a ScreenGraphicsContext
>
> [28] SubCanvas(CompositePart)>>displayOn:
>
>             Receiver: (id=7007) a SubCanvas
>
>             Arg1: (id=8480) a ScreenGraphicsContext
>
> [29] WidgetStateWrapper(Wrapper)>>displayOn:
>
>             Receiver: (id=9953) a WidgetStateWrapper on: a SubCanvas
>
>             Arg1: (id=8480) a ScreenGraphicsContext
>
> [30] WidgetStateWrapper>>displayOn:
>
>             Receiver: (id=9953) a WidgetStateWrapper on: a SubCanvas
>
>             Arg1: (id=8480) a ScreenGraphicsContext
>
> [31] BoundedWrapper>>displayOn:
>
>             Receiver: (id=1985) a BoundedWrapper on: a
> WidgetStateWrapper on: a SubCanvas
>
>             Arg1: (id=8480) a ScreenGraphicsContext
>
> [32] SpecWrapper(Wrapper)>>displayOn:
>
>             Receiver: (id=14925) a SpecWrapper on: a BoundedWrapper on:
> a WidgetStateWrapper on: a SubCanvas
>
>             Arg1: (id=8480) a ScreenGraphicsContext
>
> [33] SpecWrapper(WidgetWrapper)>>displayOn:
>
>             Receiver: (id=14925) a SpecWrapper on: a BoundedWrapper on:
> a WidgetStateWrapper on: a SubCanvas
>
>             Arg1: (id=8480) a ScreenGraphicsContext
>
> [34] SubCanvas(CompositePart)>>displayOn:
>
>             Receiver: (id=2960) a SubCanvas
>
>             Arg1: (id=4433) a ScreenGraphicsContext
>
> [35] WidgetStateWrapper(Wrapper)>>displayOn:
>
>             Receiver: (id=5906) a WidgetStateWrapper on: a SubCanvas
>
>             Arg1: (id=4433) a ScreenGraphicsContext
>
> [36] WidgetStateWrapper>>displayOn:
>
>             Receiver: (id=5906) a WidgetStateWrapper on: a SubCanvas
>
>             Arg1: (id=4433) a ScreenGraphicsContext
>
> [37] BoundedWrapper>>displayOn:
>
>             Receiver: (id=15237) a BoundedWrapper on: a
> WidgetStateWrapper on: a SubCanvas
>
>             Arg1: (id=4433) a ScreenGraphicsContext
>
> [38] SpecWrapper(Wrapper)>>displayOn:
>
>             Receiver: (id=10878) a SpecWrapper on: a BoundedWrapper on:
> a WidgetStateWrapper on: a SubCanvas
>
>             Arg1: (id=4433) a ScreenGraphicsContext
>
> [39] SpecWrapper(WidgetWrapper)>>displayOn:
>
>             Receiver: (id=10878) a SpecWrapper on: a BoundedWrapper on:
> a WidgetStateWrapper on: a SubCanvas
>
>             Arg1: (id=4433) a ScreenGraphicsContext
>
> [40] SubCanvas(CompositePart)>>displayOn:
>
>             Receiver: (id=15297) a SubCanvas
>
>             Arg1: (id=386) a ScreenGraphicsContext
>
> [41] WidgetStateWrapper(Wrapper)>>displayOn:
>
>             Receiver: (id=1859) a WidgetStateWrapper on: a SubCanvas
>
>             Arg1: (id=386) a ScreenGraphicsContext
>
> [42] WidgetStateWrapper>>displayOn:
>
>             Receiver: (id=1859) a WidgetStateWrapper on: a SubCanvas
>
>             Arg1: (id=386) a ScreenGraphicsContext
>
> [43] BoundedWrapper>>displayOn:
>
>             Receiver: (id=11371) a BoundedWrapper on: a
> WidgetStateWrapper on: a SubCanvas
>
>             Arg1: (id=386) a ScreenGraphicsContext
>
> [44] SpecWrapper(Wrapper)>>displayOn:
>
>             Receiver: (id=6831) a SpecWrapper on: a BoundedWrapper on: a
> WidgetStateWrapper on: a SubCanvas
>
>             Arg1: (id=386) a ScreenGraphicsContext
>
> [45] SpecWrapper(WidgetWrapper)>>displayOn:
>
>             Receiver: (id=6831) a SpecWrapper on: a BoundedWrapper on: a
> WidgetStateWrapper on: a SubCanvas
>
>             Arg1: (id=386) a ScreenGraphicsContext
>
> [46] CompositePart>>displayOn:
>
>             Receiver: (id=11250) a CompositePart
>
>             Arg1: (id=12723) a ScreenGraphicsContext
>
> [47] BoundedWrapper>>displayOn:
>
>             Receiver: (id=4071) a BoundedWrapper on: a CompositePart
>
>             Arg1: (id=12723) a ScreenGraphicsContext
>
> [48] ReComposingComposite(CompositePart)>>displayOn:
>
>             Receiver: (id=13276) a ReComposingComposite
>
>             Arg1: (id=14749) a ScreenGraphicsContext
>
> [49] WindowDisplayPolicy>>displayDamageList:in:
>
>             Receiver: (id=16222) a WindowDisplayPolicy
>
>             Arg1: (id=7570) #( 200@226 corner: 370@249 7@249 corner:
> 920@619)
>
>             Arg2: (id=9043) an ApplicationWindow 38489
>
> [50] ApplicationWindow(ScheduledWindow)>>displayDamageEvent:
>
>             Receiver: (id=9043) an ApplicationWindow 38489
>
>             Arg1: (id=7570) #( 200@226 corner: 370@249 7@249 corner:
> 920@619)
>