I opened a Pharo1.0-10418-BETAdev09.08.2 image, opened a class browser,
right-clicked the title bar of the System Browser, and selected Inspect.
An inspector opens (successfully), as well as a DNU that NewInsecptor
does not understand the message 'extent:'. 

Browsing around a bit shows that it expects that SystemBrowser expects
that it opens a morph and sends the 'etent:' message after opening the
inspector (note that it would be better to first resize before to avoid
redrawing and flickering).


23 August 2009 11:36:56 am

VM: Mac OS - intel - 1058 - Squeak3.8.1 of '28 Aug 2006' [latest update:
#6747] Squeak VM 4.2.1b1
Image: Pharo1.0beta [Latest update: #10418]

SecurityManager state:
Restricted: false
FileAccess: true
SocketAccess: true
Working Dir /Users/rowuyts/Documents/Development/Pharo1
Trusted Dir /foobar/tooBar/forSqueak/bogus
Untrusted Dir /Users/rowuyts/Library/Preferences/Squeak/Internet/My
Squeak

NewInspector(Object)>>doesNotUnderstand: #extent:
        Receiver: a NewInspector
        Arguments and temporary variables: 
                aMessage:       extent: 3...@200
                exception:      MessageNotUnderstood: NewInspector>>extent:
                resumeValue:    nil
        Receiver's instance variables: 
                dependents:     a DependentsArray(a PluggableSystemWindow(3989) 
a
PluggableTreeMorp...etc...
                contents:       ''
                selectedObject:         a NIObjectNode
                roots:  an OrderedCollection(a NIObjectNode)
                window:         a PluggableSystemWindow(3989)
                showOnlyCurrentPath:    false
                selectedObjectForPath:  nil

SystemWindow(Morph)>>inspectInMorphic:
        Receiver: a SystemWindow(316)
        Arguments and temporary variables: 
                evt:    [...@256 mouseUp 124582 nil]
        Receiver's instance variables: 
                bounds:         9...@44 corner: 7...@515
                owner:  a PasteUpMorph(1622) [world]
                submorphs:      an Array(a WindowEdgeGripMorph(3602) a
WindowEdgeGripMorph(3160) a W...etc...
                fullBounds:     9...@44 corner: 7...@516
                color:  (Color r: 0.816 g: 0.812 b: 0.812)
                extension:      a MorphExtension (756) [other:  (layoutPolicy 
-> a
ProportionalLayou...etc...
                borderWidth:    1
                borderColor:    Color lightGray
                model:  an OBSystemBrowser
                slotName:       nil
                open:   false
                labelString:    'System Browser'
                stripes:        an Array(a RectangleMorph(3370) a 
RectangleMorph(3816))
                label:  a LabelMorph(131)'System Browser'
                closeBox:       a MultistateButtonMorph(1456)
                collapseBox:    a MultistateButtonMorph(1402)
                activeOnlyOnTop:        true
                paneMorphs:     an Array(an OBGroupingMorph(1376) an 
OBGroupingMorph(60))
                paneRects:      nil
                collapsedFrame:         nil
                fullFrame:      9...@44 corner: 7...@515
                isCollapsed:    false
                menuBox:        an IconicButton(2697)
                mustNotClose:   false
                labelWidgetAllowance:   98
                updatablePanes:         #()
                allowReframeHandles:    true
                labelArea:      an AlignmentMorph(556)
                expandBox:      a MultistateButtonMorph(1563)

SystemWindow(Morph)>>inspectAt:event:
        Receiver: a SystemWindow(316)
        Arguments and temporary variables: 
                aPoint:         2...@63
                evt:    [...@256 mouseUp 124582 nil]
                morphs:         an Array(an AlignmentMorph(556) a 
SystemWindow(316))
                target:         a SystemWindow(316)
        Receiver's instance variables: 
                bounds:         9...@44 corner: 7...@515
                owner:  a PasteUpMorph(1622) [world]
                submorphs:      an Array(a WindowEdgeGripMorph(3602) a
WindowEdgeGripMorph(3160) a W...etc...
                fullBounds:     9...@44 corner: 7...@516
                color:  (Color r: 0.816 g: 0.812 b: 0.812)
                extension:      a MorphExtension (756) [other:  (layoutPolicy 
-> a
ProportionalLayou...etc...
                borderWidth:    1
                borderColor:    Color lightGray
                model:  an OBSystemBrowser
                slotName:       nil
                open:   false
                labelString:    'System Browser'
                stripes:        an Array(a RectangleMorph(3370) a 
RectangleMorph(3816))
                label:  a LabelMorph(131)'System Browser'
                closeBox:       a MultistateButtonMorph(1456)
                collapseBox:    a MultistateButtonMorph(1402)
                activeOnlyOnTop:        true
                paneMorphs:     an Array(an OBGroupingMorph(1376) an 
OBGroupingMorph(60))
                paneRects:      nil
                collapsedFrame:         nil
                fullFrame:      9...@44 corner: 7...@515
                isCollapsed:    false
                menuBox:        an IconicButton(2697)
                mustNotClose:   false
                labelWidgetAllowance:   98
                updatablePanes:         #()
                allowReframeHandles:    true
                labelArea:      an AlignmentMorph(556)
                expandBox:      a MultistateButtonMorph(1563)

[] in ToggleMenuItemMorph(MenuItemMorph)>>invokeWithEvent:
        Receiver: a ToggleMenuItemMorph(2793)'inspect'
        Arguments and temporary variables: 
<<error during printing>
        Receiver's instance variables: 
                bounds:         2...@251 corner: 3...@269
                owner:  a MenuMorph(3977)
                submorphs:      #()
                fullBounds:     nil
                color:  Color black
                extension:      a MorphExtension (832) [other:  
(layoutProperties -> a
LayoutPropert...etc...
                font:   a LogicalFont
 familyName: DejaVu Sans
 emphasis: nil
 pointSize: 10
 rea...etc...
                emphasis:       0
                contents:       'inspect'
                hasFocus:       false
                isEnabled:      true
                subMenu:        nil
                isSelected:     false
                target:         a SystemWindow(316)
                selector:       #inspectAt:event:
                arguments:      {...@63}
                icon:   Form(16x16x32)
                getStateSelector:       nil
                enablementSelector:     nil
                keyText:        nil

BlockClosure>>ensure:
        Receiver: [closure] in
ToggleMenuItemMorph(MenuItemMorph)>>invokeWithEvent:
        Arguments and temporary variables: 
                aBlock:         [closure] in CursorWithMask(Cursor)>>showWhile:
                returnValue:    nil
                b:      nil
        Receiver's instance variables: 
                outerContext:   
ToggleMenuItemMorph(MenuItemMorph)>>invokeWithEvent:
                startpc:        136
                numArgs:        0

CursorWithMask(Cursor)>>showWhile:
        Receiver: ((CursorWithMask
        extent: 1...@16
        depth: 1
        fromArray: #(
                2r0
                2r10000000000000000000000...etc...
        Arguments and temporary variables: 
                aBlock:         [closure] in
ToggleMenuItemMorph(MenuItemMorph)>>invokeWithEvent:
                oldcursor:      ((CursorWithMask
        extent: 1...@16
        depth: 1
        fromArray: #(
                2r0
                2r1...etc...
        Receiver's instance variables: 
                bits:   a Bitmap of length 16
                width:  16
                height:         16
                depth:  1
                offset:         -...@-1
                maskForm:       Form(16x16x1)

ToggleMenuItemMorph(MenuItemMorph)>>invokeWithEvent:
        Receiver: a ToggleMenuItemMorph(2793)'inspect'
        Arguments and temporary variables: 
                evt:    [...@256 mouseUp 124582 nil]
                w:      a PasteUpMorph(1622) [world]
                selArgCount:    #(2)
        Receiver's instance variables: 
                bounds:         2...@251 corner: 3...@269
                owner:  a MenuMorph(3977)
                submorphs:      #()
                fullBounds:     nil
                color:  Color black
                extension:      a MorphExtension (832) [other:  
(layoutProperties -> a
LayoutPropert...etc...
                font:   a LogicalFont
 familyName: DejaVu Sans
 emphasis: nil
 pointSize: 10
 rea...etc...
                emphasis:       0
                contents:       'inspect'
                hasFocus:       false
                isEnabled:      true
                subMenu:        nil
                isSelected:     false
                target:         a SystemWindow(316)
                selector:       #inspectAt:event:
                arguments:      {...@63}
                icon:   Form(16x16x32)
                getStateSelector:       nil
                enablementSelector:     nil
                keyText:        nil

ToggleMenuItemMorph(MenuItemMorph)>>mouseUp:
        Receiver: a ToggleMenuItemMorph(2793)'inspect'
        Arguments and temporary variables: 
                evt:    [...@256 mouseUp 124582 nil]
        Receiver's instance variables: 
                bounds:         2...@251 corner: 3...@269
                owner:  a MenuMorph(3977)
                submorphs:      #()
                fullBounds:     nil
                color:  Color black
                extension:      a MorphExtension (832) [other:  
(layoutProperties -> a
LayoutPropert...etc...
                font:   a LogicalFont
 familyName: DejaVu Sans
 emphasis: nil
 pointSize: 10
 rea...etc...
                emphasis:       0
                contents:       'inspect'
                hasFocus:       false
                isEnabled:      true
                subMenu:        nil
                isSelected:     false
                target:         a SystemWindow(316)
                selector:       #inspectAt:event:
                arguments:      {...@63}
                icon:   Form(16x16x32)
                getStateSelector:       nil
                enablementSelector:     nil
                keyText:        nil

ToggleMenuItemMorph(MenuItemMorph)>>handleMouseUp:
        Receiver: a ToggleMenuItemMorph(2793)'inspect'
        Arguments and temporary variables: 
                anEvent:        [...@256 mouseUp 124582 nil]
        Receiver's instance variables: 
                bounds:         2...@251 corner: 3...@269
                owner:  a MenuMorph(3977)
                submorphs:      #()
                fullBounds:     nil
                color:  Color black
                extension:      a MorphExtension (832) [other:  
(layoutProperties -> a
LayoutPropert...etc...
                font:   a LogicalFont
 familyName: DejaVu Sans
 emphasis: nil
 pointSize: 10
 rea...etc...
                emphasis:       0
                contents:       'inspect'
                hasFocus:       false
                isEnabled:      true
                subMenu:        nil
                isSelected:     false
                target:         a SystemWindow(316)
                selector:       #inspectAt:event:
                arguments:      {...@63}
                icon:   Form(16x16x32)
                getStateSelector:       nil
                enablementSelector:     nil
                keyText:        nil

MouseButtonEvent>>sentTo:
        Receiver: [...@256 mouseUp 124582 nil]
        Arguments and temporary variables: 
                anObject:       a ToggleMenuItemMorph(2793)'inspect'
        Receiver's instance variables: 
                timeStamp:      124582
                source:         a HandMorph(3216)
                windowIndex:    nil
                type:   #mouseUp
                buttons:        0
                position:       2...@256
                handler:        nil
                wasHandled:     true
                whichButton:    4

ToggleMenuItemMorph(Morph)>>handleEvent:
        Receiver: a ToggleMenuItemMorph(2793)'inspect'
        Arguments and temporary variables: 
                anEvent:        [...@256 mouseUp 124582 nil]
        Receiver's instance variables: 
                bounds:         2...@251 corner: 3...@269
                owner:  a MenuMorph(3977)
                submorphs:      #()
                fullBounds:     nil
                color:  Color black
                extension:      a MorphExtension (832) [other:  
(layoutProperties -> a
LayoutPropert...etc...
                font:   a LogicalFont
 familyName: DejaVu Sans
 emphasis: nil
 pointSize: 10
 rea...etc...
                emphasis:       0
                contents:       'inspect'
                hasFocus:       false
                isEnabled:      true
                subMenu:        nil
                isSelected:     false
                target:         a SystemWindow(316)
                selector:       #inspectAt:event:
                arguments:      {...@63}
                icon:   Form(16x16x32)
                getStateSelector:       nil
                enablementSelector:     nil
                keyText:        nil

MorphicEventDispatcher>>dispatchDefault:with:
        Receiver: a MorphicEventDispatcher
        Arguments and temporary variables: 
                anEvent:        [...@256 mouseUp 124582 nil]
                aMorph:         a ToggleMenuItemMorph(2793)'inspect'
                localEvt:       nil
                index:  1
                child:  nil
                morphs:         #()
                inside:         true
        Receiver's instance variables: 
                lastType:       #mouseUp
                lastDispatch:   #dispatchDefault:with:

MorphicEventDispatcher>>dispatchEvent:with:
        Receiver: a MorphicEventDispatcher
        Arguments and temporary variables: 
                anEvent:        [...@256 mouseUp 124582 nil]
                aMorph:         a ToggleMenuItemMorph(2793)'inspect'
        Receiver's instance variables: 
                lastType:       #mouseUp
                lastDispatch:   #dispatchDefault:with:

ToggleMenuItemMorph(Morph)>>processEvent:using:
        Receiver: a ToggleMenuItemMorph(2793)'inspect'
        Arguments and temporary variables: 
                anEvent:        [...@256 mouseUp 124582 nil]
                defaultDispatcher:      a MorphicEventDispatcher
        Receiver's instance variables: 
                bounds:         2...@251 corner: 3...@269
                owner:  a MenuMorph(3977)
                submorphs:      #()
                fullBounds:     nil
                color:  Color black
                extension:      a MorphExtension (832) [other:  
(layoutProperties -> a
LayoutPropert...etc...
                font:   a LogicalFont
 familyName: DejaVu Sans
 emphasis: nil
 pointSize: 10
 rea...etc...
                emphasis:       0
                contents:       'inspect'
                hasFocus:       false
                isEnabled:      true
                subMenu:        nil
                isSelected:     false
                target:         a SystemWindow(316)
                selector:       #inspectAt:event:
                arguments:      {...@63}
                icon:   Form(16x16x32)
                getStateSelector:       nil
                enablementSelector:     nil
                keyText:        nil

MorphicEventDispatcher>>dispatchDefault:with:
        Receiver: a MorphicEventDispatcher
        Arguments and temporary variables: 
                anEvent:        [...@256 mouseUp 124582 nil]
                aMorph:         a MenuMorph(3977)
                localEvt:       [...@256 mouseUp 124582 nil]
                index:  20
                child:  a ToggleMenuItemMorph(2793)'inspect'
                morphs:         an Array(an AlignmentMorph(187) a
ToggleMenuItemMorph(2760)'grab' a Tog...etc...
                inside:         false
        Receiver's instance variables: 
                lastType:       #mouseUp
                lastDispatch:   #dispatchDefault:with:

MorphicEventDispatcher>>dispatchEvent:with:
        Receiver: a MorphicEventDispatcher
        Arguments and temporary variables: 
                anEvent:        [...@256 mouseUp 124582 nil]
                aMorph:         a MenuMorph(3977)
        Receiver's instance variables: 
                lastType:       #mouseUp
                lastDispatch:   #dispatchDefault:with:

MenuMorph(Morph)>>processEvent:using:
        Receiver: a MenuMorph(3977)
        Arguments and temporary variables: 
                anEvent:        [...@256 mouseUp 124582 nil]
                defaultDispatcher:      a MorphicEventDispatcher
        Receiver's instance variables: 
                bounds:         2...@33 corner: 3...@399
                owner:  nil
                submorphs:      an Array(an AlignmentMorph(187) a
ToggleMenuItemMorph(2760)'grab' a ...etc...
                fullBounds:     nil
                color:  (Color r: 0.871 g: 0.871 b: 0.871)
                extension:      a MorphExtension (2794) [other:  (layoutPolicy 
-> a
TableLayout) (la...etc...
                borderWidth:    1
                borderColor:    Color gray
                defaultTarget:  a SystemWindow(316)
                selectedItem:   a ToggleMenuItemMorph(2793)'inspect'
                stayUp:         false
                popUpOwner:     nil
                activeSubMenu:  nil
                activatorDockingBar:    nil

MenuMorph(Morph)>>processEvent:
        Receiver: a MenuMorph(3977)
        Arguments and temporary variables: 
                anEvent:        [...@256 mouseUp 124582 nil]
        Receiver's instance variables: 
                bounds:         2...@33 corner: 3...@399
                owner:  nil
                submorphs:      an Array(an AlignmentMorph(187) a
ToggleMenuItemMorph(2760)'grab' a ...etc...
                fullBounds:     nil
                color:  (Color r: 0.871 g: 0.871 b: 0.871)
                extension:      a MorphExtension (2794) [other:  (layoutPolicy 
-> a
TableLayout) (la...etc...
                borderWidth:    1
                borderColor:    Color gray
                defaultTarget:  a SystemWindow(316)
                selectedItem:   a ToggleMenuItemMorph(2793)'inspect'
                stayUp:         false
                popUpOwner:     nil
                activeSubMenu:  nil
                activatorDockingBar:    nil

MenuMorph>>handleFocusEvent:
        Receiver: a MenuMorph(3977)
        Arguments and temporary variables: 
                evt:    [...@256 mouseUp 124582 nil]
        Receiver's instance variables: 
                bounds:         2...@33 corner: 3...@399
                owner:  nil
                submorphs:      an Array(an AlignmentMorph(187) a
ToggleMenuItemMorph(2760)'grab' a ...etc...
                fullBounds:     nil
                color:  (Color r: 0.871 g: 0.871 b: 0.871)
                extension:      a MorphExtension (2794) [other:  (layoutPolicy 
-> a
TableLayout) (la...etc...
                borderWidth:    1
                borderColor:    Color gray
                defaultTarget:  a SystemWindow(316)
                selectedItem:   a ToggleMenuItemMorph(2793)'inspect'
                stayUp:         false
                popUpOwner:     nil
                activeSubMenu:  nil
                activatorDockingBar:    nil

[] in HandMorph>>sendFocusEvent:to:clear:
        Receiver: a HandMorph(3216)
        Arguments and temporary variables: 
<<error during printing>
        Receiver's instance variables: 
                bounds:         6...@509 corner: 7...@525
                owner:  a PasteUpMorph(1622) [world]
                submorphs:      #()
                fullBounds:     6...@509 corner: 7...@525
                color:  Color blue
                extension:      a MorphExtension (539) [eventHandler = an 
EventHandler] 
                mouseFocus:     nil
                keyboardFocus:  nil
                eventListeners:         nil
                mouseListeners:         nil
                keyboardListeners:      nil
                mouseClickState:        nil
                mouseOverHandler:       a MouseOverHandler
                lastMouseEvent:         [...@509 mouseUp 805735 nil]
                targetOffset:   2...@14
                damageRecorder:         a DamageRecorder
                cacheCanvas:    nil
                cachedCanvasHasHoles:   true
                temporaryCursor:        nil
                temporaryCursorOffset:  nil
                hardwareCursor:         nil
                hasChanged:     true
                savedPatch:     nil
                userInitials:   ''
                lastEventBuffer:        #(1 805735 690 509 0 0 0 1)
                lastKeyScanCode:        46
                combinedChar:   nil

[] in PasteUpMorph>>becomeActiveDuring:
        Receiver: a PasteUpMorph(1622) [world]
        Arguments and temporary variables: 
<<error during printing>
        Receiver's instance variables: 
                bounds:         0...@0 corner: 9...@638
                owner:  nil
                submorphs:      an Array(a TaskbarMorph(3095) a 
SystemWindow(1204) a
SystemWindow(31...etc...
                fullBounds:     0...@0 corner: 9...@638
                color:  (Color r: 0.97 g: 0.98 b: 1.0)
                extension:      a MorphExtension (2543) [eventHandler = an 
EventHandler] 
[other:  (...etc...
                borderWidth:    0
                borderColor:    (Color r: 0.03 g: 0.02 b: 0.0)
                presenter:      a Presenter (1246)
                model:  a MorphicModel(1926)
                cursor:         1
                padding:        3
                backgroundMorph:        nil
                isPartsBin:     nil
                autoLineLayout:         false
                indicateCursor:         nil
                resizeToFit:    nil
                wantsMouseOverHalos:    nil
                worldState:     a WorldState
                griddingOn:     nil

BlockClosure>>on:do:
        Receiver: [closure] in PasteUpMorph>>becomeActiveDuring:
        Arguments and temporary variables: 
                exception:      Error
                handlerAction:  [closure] in PasteUpMorph>>becomeActiveDuring:
                handlerActive:  false
        Receiver's instance variables: 
                outerContext:   PasteUpMorph>>becomeActiveDuring:
                startpc:        67
                numArgs:        0

PasteUpMorph>>becomeActiveDuring:
        Receiver: a PasteUpMorph(1622) [world]
        Arguments and temporary variables: 
                aBlock:         [closure] in HandMorph>>sendFocusEvent:to:clear:
                priorWorld:     a PasteUpMorph(1622) [world]
                priorHand:      a HandMorph(3216)
                priorEvent:     [...@256 mouseOver red nil nil]
        Receiver's instance variables: 
                bounds:         0...@0 corner: 9...@638
                owner:  nil
                submorphs:      an Array(a TaskbarMorph(3095) a 
SystemWindow(1204) a
SystemWindow(31...etc...
                fullBounds:     0...@0 corner: 9...@638
                color:  (Color r: 0.97 g: 0.98 b: 1.0)
                extension:      a MorphExtension (2543) [eventHandler = an 
EventHandler] 
[other:  (...etc...
                borderWidth:    0
                borderColor:    (Color r: 0.03 g: 0.02 b: 0.0)
                presenter:      a Presenter (1246)
                model:  a MorphicModel(1926)
                cursor:         1
                padding:        3
                backgroundMorph:        nil
                isPartsBin:     nil
                autoLineLayout:         false
                indicateCursor:         nil
                resizeToFit:    nil
                wantsMouseOverHalos:    nil
                worldState:     a WorldState
                griddingOn:     nil

HandMorph>>sendFocusEvent:to:clear:
        Receiver: a HandMorph(3216)
        Arguments and temporary variables: 
                anEvent:        [...@256 mouseUp 124582 nil]
                focusHolder:    a MenuMorph(3977)
                aBlock:         [closure] in HandMorph>>sendMouseEvent:
                w:      a PasteUpMorph(1622) [world]
                result:         #(nil)
        Receiver's instance variables: 
                bounds:         6...@509 corner: 7...@525
                owner:  a PasteUpMorph(1622) [world]
                submorphs:      #()
                fullBounds:     6...@509 corner: 7...@525
                color:  Color blue
                extension:      a MorphExtension (539) [eventHandler = an 
EventHandler] 
                mouseFocus:     nil
                keyboardFocus:  nil
                eventListeners:         nil
                mouseListeners:         nil
                keyboardListeners:      nil
                mouseClickState:        nil
                mouseOverHandler:       a MouseOverHandler
                lastMouseEvent:         [...@509 mouseUp 805735 nil]
                targetOffset:   2...@14
                damageRecorder:         a DamageRecorder
                cacheCanvas:    nil
                cachedCanvasHasHoles:   true
                temporaryCursor:        nil
                temporaryCursorOffset:  nil
                hardwareCursor:         nil
                hasChanged:     true
                savedPatch:     nil
                userInitials:   ''
                lastEventBuffer:        #(1 805735 690 509 0 0 0 1)
                lastKeyScanCode:        46
                combinedChar:   nil

HandMorph>>sendEvent:focus:clear:
        Receiver: a HandMorph(3216)
        Arguments and temporary variables: 
                anEvent:        [...@256 mouseUp 124582 nil]
                focusHolder:    a MenuMorph(3977)
                aBlock:         [closure] in HandMorph>>sendMouseEvent:
                result:         nil
        Receiver's instance variables: 
                bounds:         6...@509 corner: 7...@525
                owner:  a PasteUpMorph(1622) [world]
                submorphs:      #()
                fullBounds:     6...@509 corner: 7...@525
                color:  Color blue
                extension:      a MorphExtension (539) [eventHandler = an 
EventHandler] 
                mouseFocus:     nil
                keyboardFocus:  nil
                eventListeners:         nil
                mouseListeners:         nil
                keyboardListeners:      nil
                mouseClickState:        nil
                mouseOverHandler:       a MouseOverHandler
                lastMouseEvent:         [...@509 mouseUp 805735 nil]
                targetOffset:   2...@14
                damageRecorder:         a DamageRecorder
                cacheCanvas:    nil
                cachedCanvasHasHoles:   true
                temporaryCursor:        nil
                temporaryCursorOffset:  nil
                hardwareCursor:         nil
                hasChanged:     true
                savedPatch:     nil
                userInitials:   ''
                lastEventBuffer:        #(1 805735 690 509 0 0 0 1)
                lastKeyScanCode:        46
                combinedChar:   nil

HandMorph>>sendMouseEvent:
        Receiver: a HandMorph(3216)
        Arguments and temporary variables: 
                anEvent:        [...@256 mouseUp 124582 nil]
        Receiver's instance variables: 
                bounds:         6...@509 corner: 7...@525
                owner:  a PasteUpMorph(1622) [world]
                submorphs:      #()
                fullBounds:     6...@509 corner: 7...@525
                color:  Color blue
                extension:      a MorphExtension (539) [eventHandler = an 
EventHandler] 
                mouseFocus:     nil
                keyboardFocus:  nil
                eventListeners:         nil
                mouseListeners:         nil
                keyboardListeners:      nil
                mouseClickState:        nil
                mouseOverHandler:       a MouseOverHandler
                lastMouseEvent:         [...@509 mouseUp 805735 nil]
                targetOffset:   2...@14
                damageRecorder:         a DamageRecorder
                cacheCanvas:    nil
                cachedCanvasHasHoles:   true
                temporaryCursor:        nil
                temporaryCursorOffset:  nil
                hardwareCursor:         nil
                hasChanged:     true
                savedPatch:     nil
                userInitials:   ''
                lastEventBuffer:        #(1 805735 690 509 0 0 0 1)
                lastKeyScanCode:        46
                combinedChar:   nil

HandMorph>>handleEvent:
        Receiver: a HandMorph(3216)
        Arguments and temporary variables: 
                anEvent:        [...@256 mouseUp 124582 nil]
                evt:    [...@256 mouseUp 124582 nil]
                ofs:    nil
        Receiver's instance variables: 
                bounds:         6...@509 corner: 7...@525
                owner:  a PasteUpMorph(1622) [world]
                submorphs:      #()
                fullBounds:     6...@509 corner: 7...@525
                color:  Color blue
                extension:      a MorphExtension (539) [eventHandler = an 
EventHandler] 
                mouseFocus:     nil
                keyboardFocus:  nil
                eventListeners:         nil
                mouseListeners:         nil
                keyboardListeners:      nil
                mouseClickState:        nil
                mouseOverHandler:       a MouseOverHandler
                lastMouseEvent:         [...@509 mouseUp 805735 nil]
                targetOffset:   2...@14
                damageRecorder:         a DamageRecorder
                cacheCanvas:    nil
                cachedCanvasHasHoles:   true
                temporaryCursor:        nil
                temporaryCursorOffset:  nil
                hardwareCursor:         nil
                hasChanged:     true
                savedPatch:     nil
                userInitials:   ''
                lastEventBuffer:        #(1 805735 690 509 0 0 0 1)
                lastKeyScanCode:        46
                combinedChar:   nil

HandMorph>>processEvents
        Receiver: a HandMorph(3216)
        Arguments and temporary variables: 
                evt:    [...@256 mouseUp 124582 nil]
                evtBuf:         #(1 124582 270 256 0 0 0 1)
                type:   1
                hadAny:         false
        Receiver's instance variables: 
                bounds:         6...@509 corner: 7...@525
                owner:  a PasteUpMorph(1622) [world]
                submorphs:      #()
                fullBounds:     6...@509 corner: 7...@525
                color:  Color blue
                extension:      a MorphExtension (539) [eventHandler = an 
EventHandler] 
                mouseFocus:     nil
                keyboardFocus:  nil
                eventListeners:         nil
                mouseListeners:         nil
                keyboardListeners:      nil
                mouseClickState:        nil
                mouseOverHandler:       a MouseOverHandler
                lastMouseEvent:         [...@509 mouseUp 805735 nil]
                targetOffset:   2...@14
                damageRecorder:         a DamageRecorder
                cacheCanvas:    nil
                cachedCanvasHasHoles:   true
                temporaryCursor:        nil
                temporaryCursorOffset:  nil
                hardwareCursor:         nil
                hasChanged:     true
                savedPatch:     nil
                userInitials:   ''
                lastEventBuffer:        #(1 805735 690 509 0 0 0 1)
                lastKeyScanCode:        46
                combinedChar:   nil

[] in WorldState>>doOneCycleNowFor:
        Receiver: a WorldState
        Arguments and temporary variables: 
<<error during printing>
        Receiver's instance variables: 
                hands:  an Array(a HandMorph(3216))
                viewBox:        0...@0 corner: 9...@638
                canvas:         a FormCanvas on: DisplayScreen(976x638x32)
                damageRecorder:         a DamageRecorder
                stepList:       a Heap(StepMessage(#stepAt: -> 
3PButton(#toggleSelected
1603))(3PButt...etc...
                lastStepTime:   805807
                lastStepMessage:        nil
                lastCycleTime:  805754
                commandHistory:         a CommandHistory
                alarms:         a Heap()
                lastAlarmTime:  805807

Array(SequenceableCollection)>>do:
        Receiver: an Array(a HandMorph(3216))
        Arguments and temporary variables: 
                aBlock:         [closure] in WorldState>>doOneCycleNowFor:
                index:  1
                indexLimiT:     1
        Receiver's instance variables: 
an Array(a HandMorph(3216))

WorldState>>handsDo:
        Receiver: a WorldState
        Arguments and temporary variables: 
                aBlock:         [closure] in WorldState>>doOneCycleNowFor:
        Receiver's instance variables: 
                hands:  an Array(a HandMorph(3216))
                viewBox:        0...@0 corner: 9...@638
                canvas:         a FormCanvas on: DisplayScreen(976x638x32)
                damageRecorder:         a DamageRecorder
                stepList:       a Heap(StepMessage(#stepAt: -> 
3PButton(#toggleSelected
1603))(3PButt...etc...
                lastStepTime:   805807
                lastStepMessage:        nil
                lastCycleTime:  805754
                commandHistory:         a CommandHistory
                alarms:         a Heap()
                lastAlarmTime:  805807

WorldState>>doOneCycleNowFor:
        Receiver: a WorldState
        Arguments and temporary variables: 
                aWorld:         a PasteUpMorph(1622) [world]
        Receiver's instance variables: 
                hands:  an Array(a HandMorph(3216))
                viewBox:        0...@0 corner: 9...@638
                canvas:         a FormCanvas on: DisplayScreen(976x638x32)
                damageRecorder:         a DamageRecorder
                stepList:       a Heap(StepMessage(#stepAt: -> 
3PButton(#toggleSelected
1603))(3PButt...etc...
                lastStepTime:   805807
                lastStepMessage:        nil
                lastCycleTime:  805754
                commandHistory:         a CommandHistory
                alarms:         a Heap()
                lastAlarmTime:  805807

WorldState>>doOneCycleFor:
        Receiver: a WorldState
        Arguments and temporary variables: 
                aWorld:         a PasteUpMorph(1622) [world]
        Receiver's instance variables: 
                hands:  an Array(a HandMorph(3216))
                viewBox:        0...@0 corner: 9...@638
                canvas:         a FormCanvas on: DisplayScreen(976x638x32)
                damageRecorder:         a DamageRecorder
                stepList:       a Heap(StepMessage(#stepAt: -> 
3PButton(#toggleSelected
1603))(3PButt...etc...
                lastStepTime:   805807
                lastStepMessage:        nil
                lastCycleTime:  805754
                commandHistory:         a CommandHistory
                alarms:         a Heap()
                lastAlarmTime:  805807

PasteUpMorph>>doOneCycle
        Receiver: a PasteUpMorph(1622) [world]
        Arguments and temporary variables: 

        Receiver's instance variables: 
                bounds:         0...@0 corner: 9...@638
                owner:  nil
                submorphs:      an Array(a TaskbarMorph(3095) a 
SystemWindow(1204) a
SystemWindow(31...etc...
                fullBounds:     0...@0 corner: 9...@638
                color:  (Color r: 0.97 g: 0.98 b: 1.0)
                extension:      a MorphExtension (2543) [eventHandler = an 
EventHandler] 
[other:  (...etc...
                borderWidth:    0
                borderColor:    (Color r: 0.03 g: 0.02 b: 0.0)
                presenter:      a Presenter (1246)
                model:  a MorphicModel(1926)
                cursor:         1
                padding:        3
                backgroundMorph:        nil
                isPartsBin:     nil
                autoLineLayout:         false
                indicateCursor:         nil
                resizeToFit:    nil
                wantsMouseOverHalos:    nil
                worldState:     a WorldState
                griddingOn:     nil

[] in Project class>>spawnNewProcess
        Receiver: Project
        Arguments and temporary variables: 

        Receiver's instance variables: 
                superclass:     Model
                methodDict:     a MethodDictionary(size 167)
                format:         172
                instanceVariables:      #('world' 'changeSet' 'transcript' 
'parentProject'
'previous...etc...
                organization:   ('*Polymorph-Widgets'
assureTaskbarPresenceMatchesPreference crea...etc...
                subclasses:     nil
                name:   #Project
                classPool:      a Dictionary(#AllProjects->an 
OrderedCollection(a
Project(Unnamed)) ...etc...
                sharedPools:    nil
                environment:    Smalltalk
                category:       #'System-Support'
                traitComposition:       {}
                localSelectors:         nil

[] in BlockClosure>>newProcess
        Receiver: [closure] in Project class>>spawnNewProcess
        Arguments and temporary variables: 

        Receiver's instance variables: 
                outerContext:   Project class>>spawnNewProcess
                startpc:        53
                numArgs:        0


--- The full stack ---
NewInspector(Object)>>doesNotUnderstand: #extent:
SystemWindow(Morph)>>inspectInMorphic:
SystemWindow(Morph)>>inspectAt:event:
[] in ToggleMenuItemMorph(MenuItemMorph)>>invokeWithEvent:
BlockClosure>>ensure:
CursorWithMask(Cursor)>>showWhile:
ToggleMenuItemMorph(MenuItemMorph)>>invokeWithEvent:
ToggleMenuItemMorph(MenuItemMorph)>>mouseUp:
ToggleMenuItemMorph(MenuItemMorph)>>handleMouseUp:
MouseButtonEvent>>sentTo:
ToggleMenuItemMorph(Morph)>>handleEvent:
MorphicEventDispatcher>>dispatchDefault:with:
MorphicEventDispatcher>>dispatchEvent:with:
ToggleMenuItemMorph(Morph)>>processEvent:using:
MorphicEventDispatcher>>dispatchDefault:with:
MorphicEventDispatcher>>dispatchEvent:with:
MenuMorph(Morph)>>processEvent:using:
MenuMorph(Morph)>>processEvent:
MenuMorph>>handleFocusEvent:
[] in HandMorph>>sendFocusEvent:to:clear:
[] in PasteUpMorph>>becomeActiveDuring:
BlockClosure>>on:do:
PasteUpMorph>>becomeActiveDuring:
HandMorph>>sendFocusEvent:to:clear:
HandMorph>>sendEvent:focus:clear:
HandMorph>>sendMouseEvent:
HandMorph>>handleEvent:
HandMorph>>processEvents
[] in WorldState>>doOneCycleNowFor:
Array(SequenceableCollection)>>do:
WorldState>>handsDo:
WorldState>>doOneCycleNowFor:
WorldState>>doOneCycleFor:
PasteUpMorph>>doOneCycle
[] in Project class>>spawnNewProcess
[] in BlockClosure>>newProcess

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