I download this morning a fresh Squeak3.7b-5905.image and have this walkbak
caused by loading a former project having a flap.
Sorry if this was yet reported.

Edgar

-------------- next part --------------
MessageNotUnderstood: UndefinedObject>>+
30 April 2004 2:35:35 pm

VM: Mac OS - a SmalltalkImage
Image: Squeak3.7beta [latest update: #5905]

SecurityManager state:
Restricted: false
FileAccess: true
SocketAccess: true
Working Dir Macintosh HD:Users:edgar:Public:SqueakDevelop:Squeak3.7a-5657 Ä
Trusted Dir Macintosh HD:Users:edgar:Public:SqueakDevelop:Squeak3.7a-5657 Ä
Untrusted Dir foobar:tooBar:forSqueak:bogus

UndefinedObject(Object)>>doesNotUnderstand: #+
	Receiver: nil
	Arguments and temporary variables: 
		aMessage: 	+ 168 at 0
	Receiver's instance variables: 
nil
NewParagraph>>moveBy:
	Receiver: a NewParagraph
	Arguments and temporary variables: 
		delta: 	168 at 0
		line: 	a TextLine 29 to: 29
	Receiver's instance variables: 
		text: 	a Text for 'S
q
u
e
a
k
R
o
s
 
U
t
i
l
s'
		textStyle: 	a TextStyle Accuny15
		firstCharacterIndex: 	1
		container: 	788 at 80 corner: 800 at 10000079
		lines: 	#(a TextLine 1 to: 2 a TextLine 3 to: 4 a TextLine 5 to: 6 a TextLine 7 to: 8 a TextLine 9 to: 10 a TextLi...etc...
		positionWhenComposed: 	nil
		offsetToEnd: 	28
		maxRightX: 	800
		selectionStart: 	nil
		selectionStop: 	nil
		wantsColumnBreaks: 	false
		focused: 	nil

TextMorph>>privateMoveBy:
	Receiver: a TextMorph(3361)
	Arguments and temporary variables: 
		delta: 	168 at 0
	Receiver's instance variables: 
		bounds: 	787 at 85 corner: 799 at 266
		owner: 	a FlapTab<SqueakRos Utils>(2625) "SqueakRos Utils"
		submorphs: 	#()
		fullBounds: 	787 at 85 corner: 799 at 266
		color: 	Color black
		extension: 	a MorphExtension (3325) [locked]  [other:  (CreatingParagraph -> true) (errorOnDraw -> true)]...etc...
		borderWidth: 	0
		borderColor: 	Color black
		textStyle: 	a TextStyle Accuny15
		text: 	a Text for 'S
q
u
e
a
k
R
o
s
 
U
t
i
l
s'
		wrapFlag: 	false
		paragraph: 	a NewParagraph
		editor: 	nil
		container: 	nil
		predecessor: 	nil
		successor: 	nil
		backgroundColor: 	nil
		margins: 	nil

TextMorph(Morph)>>privateFullMoveBy:
	Receiver: a TextMorph(3361)
	Arguments and temporary variables: 
		delta: 	168 at 0
		i: 	nil
		iLimiT: 	nil
	Receiver's instance variables: 
		bounds: 	787 at 85 corner: 799 at 266
		owner: 	a FlapTab<SqueakRos Utils>(2625) "SqueakRos Utils"
		submorphs: 	#()
		fullBounds: 	787 at 85 corner: 799 at 266
		color: 	Color black
		extension: 	a MorphExtension (3325) [locked]  [other:  (CreatingParagraph -> true) (errorOnDraw -> true)]...etc...
		borderWidth: 	0
		borderColor: 	Color black
		textStyle: 	a TextStyle Accuny15
		text: 	a Text for 'S
q
u
e
a
k
R
o
s
 
U
t
i
l
s'
		wrapFlag: 	false
		paragraph: 	a NewParagraph
		editor: 	nil
		container: 	nil
		predecessor: 	nil
		successor: 	nil
		backgroundColor: 	nil
		margins: 	nil


--- The full stack ---
UndefinedObject(Object)>>doesNotUnderstand: #+
NewParagraph>>moveBy:
TextMorph>>privateMoveBy:
TextMorph(Morph)>>privateFullMoveBy:
 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
FlapTab(Morph)>>privateFullMoveBy:
FlapTab(Morph)>>position:
FlapTab(Morph)>>right:
FlapTab>>positionObject:atEdgeOf:
FlapTab>>fitOnScreen
FlapTab>>mouseUp:
FlapTab(Morph)>>handleMouseUp:
MouseButtonEvent>>sentTo:
FlapTab(Morph)>>handleEvent:
FlapTab(Morph)>>handleFocusEvent:
[] in HandMorph>>sendFocusEvent:to:clear: {[ActiveHand := self.  ActiveEvent := anEvent.  result := focusHolder     han...]}
[] in PasteUpMorph>>becomeActiveDuring: {[aBlock value]}
BlockContext>>on:do:
PasteUpMorph>>becomeActiveDuring:
HandMorph>>sendFocusEvent:to:clear:
HandMorph>>sendEvent:focus:clear:
HandMorph>>sendMouseEvent:
HandMorph>>handleEvent:
HandMorph>>processEvents
[] in WorldState>>doOneCycleNowFor: {[:h |  ActiveHand := h.  h processEvents.  capturingGesture := capturingGest...]}
Array(SequenceableCollection)>>do:
WorldState>>handsDo:
WorldState>>doOneCycleNowFor:
WorldState>>doOneCycleFor:
PasteUpMorph>>doOneCycle
[] in Project class>>spawnNewProcess {[[World doOneCycle.  Processor yield.  false] whileFalse.  nil]}
[] in BlockContext>>newProcess {[self value.  Processor terminateActive]}