Dear all,

	I am just new to this list as I am new to Squeak. I have previously
used VisualWorks, and now I try to learn how to work with Squeak.

	I have choosen to start exploring Squeak's user interface the book
"Squeak Object-Oriented design with Multimedia Applications" by Mark
Guzdial -donated by ESUG to my
University- and working through the examples of the book, I have found
my Squeak awfully crashing. In particular, when editing a Morph -an
ellipse- and adding a new instance variable
through the Viewer, I get a Segmentation fault with the following list
of errors:

german at mermaja:~/ST80/Squeak>
Segmentation fault

1089835124 Socket>finalize
1089835528 [] in WeakRegistry>finalizeValues
1089834968 OrderedCollection>do:
1089833496 WeakRegistry>finalizeValues
1089833312 [] in WeakArray class>doesNotUnderstand:
1089833404 SequenceableCollection>do:
1089832760 [] in WeakArray class>doesNotUnderstand:
1089832944 [] in Semaphore>critical:ifError:
1089832668 BlockContext>on:do:
1089832576 BlockContext>ifError:
1089832456 Semaphore>critical:ifError:
1079587744 WeakArray class>doesNotUnderstand:
1079587440 [] in UndefinedObject>doesNotUnderstand:
1079587624 [] in BlockContext>doesNotUnderstand:

I use the last stable version of Squeak (3.4-1) that I have compiled
from the sources.

Any hint about what is happening?

Thank you all for your help.

Regards,
Germán Fabregat
University Jaume I
Castellón
SPAIN