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From: jaffe@jaffe.mc.ab.com (Bruce Jaffe (ext 3581))
Newsgroups: comp.lang.smalltalk
Subject: Unwanted Instances
Message-ID: <234@zeus.mc.ab.com>
Date: 19 Feb 91 15:45:23 GMT
Sender: news@zeus.mc.ab.com
Reply-To: jaffe@jaffe.mc.ab.com (Bruce Jaffe (ext 3581))
Organization: Allen-Bradley Company; Motion Control Division
Lines: 18

How do you get rid of unwanted instances in ST/V286?  I am trying to
modify a class, but get a walkback with "Has instances".  I have tried
"Scheduler reintialize".  Since I am running with Acumen's Widgets/V286,
I have also tried their "close windows" system menu entry, which usually
clears up this sort of problem.  Neither of these does the trick.

I looked at allInstances of the class, and allReferences to each instance.
Apparently, there is just one instance with no references.  Just to make
things more interesting, executing

		PageText allInstances
			do: [:each | each allReferences]

sometimes causes the system to return to DOS in a most undignified manner,
with the error message "Exception 0D: General protection fault, Error code/
selector: 0934"

Any ideas on how to proceed?