Nicolas Cellier uploaded a new version of Morphic to project The Trunk:
http://source.squeak.org/trunk/Morphic-nice.467.mcz

==================== Summary ====================

Name: Morphic-nice.467
Author: nice
Time: 21 September 2010, 12:46:36.082 pm
UUID: 63c9be15-3ba7-6643-9bf7-905645651e43
Ancestors: Morphic-laza.466

Protect extension access in #sticky:

=============== Diff against Morphic-laza.466 ===============

Item was changed:
  ----- Method: Morph>>sticky: (in category 'accessing') -----
  sticky: aBoolean 
  	"change the receiver's sticky property"
+ 	(extension isNil and: [aBoolean not]) ifTrue: [^ self].
+ 	self assureExtension sticky: aBoolean!
- 	extension sticky: aBoolean!