Richard,

Sorry for the confusion. The 2.8 image I used was one that has some other stuff filed in. I tried a clean 2.8 and, indeed, the bug is there. FWIW, it is fixed in 2.9 and, if you so desire, you can update your 2.8 SimpleHierarchicalListMorph>>selection: with the following
========
selection: item
	"Called from outside to request setting a new selection.
	Assumes scroller submorphs is exactly our list.
	Note: MAY NOT work right if list includes repeated items"

	| i |
	item ifNil: [^self selectionIndex: 0].
	i _ scroller submorphs findFirst: [:m | m complexContents == item].
	i > 0 ifTrue: [^self selectionIndex: i].
	i _ scroller submorphs findFirst: [:m | m withoutListWrapper = item withoutListWrapper].
	self selectionIndex: i
=====

Cheers,
Bob


On Wed, 1 Nov 2000 13:22:06 +1300 (NZDT) "Richard A. O'Keefe" <ok at atlas.otago.ac.nz> wrote:
>I wrote
>	>I *did* find a bug while poking around (try inspecting
>	>Week fromDate: (Date today), select self, and then choose Explore;
>	>you'll get a MessageNotUnderstood) but didn't describe it.
>	
>Bob Arning replied
>	Well, could you describe it?  I tried it in 2.8 and 2.9 and saw
>	no MessageNotUnderstood.
>	
>Here goes.
>
>Start Squeak 2.8 (on a PowerMac 7600/120 runing MacOS 8.6) by
>double-clicking on the image.  Big window opens containing
>Welcom To, Getting Started, and 8 Play With Me windows.
>
>Open a workspace.  In that workspace type
>	Week fromDate: (Date today)
>and type cmd-I.
>
>That opens an inspector window with title Week; the left hand pane
>lists self, all inst vars, julainDayNum(ber cut off) and the right
>hand pane as yet displays nothing.
>
>Select self in the left hand pane, press Option-Mouse (operate button),
>and choose explore (I).
>
>Up pops a pink
>	MessageNodeUnderstood: asJulianDayNumber
>	--[Proceed]--[Abandon]--[Debug]---------
>	UndefinedObject(Object)>>doesnotUnderstand:
>	Week(Date)>>=
>	[] in SimpleHierarchicalListMorph>>selection:
>	Array(SequenceableCollection)>>findFirst: