Walkback on proceed in debugger ... debugger came up because of a self halt...

[dalehenrich]

UndefinedObject(Object)>>doesNotUnderstand: #selectedCodeRangeForContext:
[ :code | 
code
	selectionInterval:
		(aDebugger session
			selectedCodeRangeForContext: aDebugger currentContext) ] in GtGsDebuggerStackFrame>>methodCodeIn:forDebugger: in Block: [ :code | ...
GLMPharoMethodPresentation(GLMPresentation)>>initializePresentation
[ :each | each initializePresentation ] in GLMCompositePresentation>>initializePresentation in Block: [ :each | each initializePresentation ]
OrderedCollection>>do:
GLMCompositePresentation>>do:
GLMCompositePresentation>>initializePresentation
[ presentations pane: nil.
presentations resetAnnouncer.
aCompositePresentation pane: self.
presentations := aCompositePresentation.
presentations initializePresentation ] in GLMPane>>presentations: in Block: [ presentations pane: nil....
GLMPane>>notingPresentationChangeDo:
GLMPane>>presentations:
[ self transmission destination pane clearIn: aContext.
self transmission destination pane
	presentations: self presentations copy ] in GLMReplacePresentationsStrategy>>transmitIn: in Block: [ self transmission destination pane clearIn: aCon...etc...
GLMPane>>notingPresentationChangeDo:
GLMReplacePresentationsStrategy>>transmitIn:
[ self transmissionStrategy transmitIn: aContext.
self destination receive: self in: aContext ] in GLMTransmission>>transmitIn: in Block: [ self transmissionStrategy transmitIn: aContext....
GLMPane>>notingPresentationChangeDo:
GLMPanePort(GLMBoundPort)>>notingPresentationChangeDo:
GLMTransmission>>transmitIn:
[ :each | each transmitIn: aPortEvent transmissionContext copy ] in GLMTabulator(GLMExplicitBrowser)>>innerPortEvent: in Block: [ :each | each transmitIn: aPortEvent transmission...etc...
OrderedCollection>>do:
GLMTabulator(GLMExplicitBrowser)>>innerPortEvent:
GLMPane>>portEvent:
[ self silentValue: anObject.
self pane
	portEvent:
		(GLMPortEvent
			on: self
			previouslyValued: oldValue
			in: aTransmissionContext) ] in GLMPanePort>>changeValueTo:in: in Block: [ self silentValue: anObject....
GLMPane>>notingPresentationChangeDo:
GLMPanePort>>changeValueTo:in:
GLMPanePort>>value:in:
GLMPanePort>>receive:in:
[ self transmissionStrategy transmitIn: aContext.
self destination receive: self in: aContext ] in GLMTransmission>>transmitIn: in Block: [ self transmissionStrategy transmitIn: aContext....
GLMPane>>notingPresentationChangeDo:
GLMPanePort(GLMBoundPort)>>notingPresentationChangeDo:
GLMTransmission>>transmitIn: