Levente Uzonyi uploaded a new version of MorphicExtras to project The Trunk:
http://source.squeak.org/trunk/MorphicExtras-ul.103.mcz

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

Name: MorphicExtras-ul.103
Author: ul
Time: 4 October 2011, 8:19:37.501 pm
UUID: d215a08d-671b-d74b-8e09-3c89f3c3d183
Ancestors: MorphicExtras-ul.102

- use #becomeForward: instead of #become:

=============== Diff against MorphicExtras-ul.102 ===============

Item was changed:
  ----- Method: SqueakPage>>purge (in category 'saving') -----
  purge
  	"Replace my morph with a tombstone, if I am not in a world that is being shown."
  
  	(self prePurge) ifNotNil: [
+ 		contentsMorph becomeForward: (MorphObjectOut new xxxSetUrl: url page: self)].
- 		contentsMorph become: (MorphObjectOut new xxxSetUrl: url page: self)].
  		"Simple, isn't it!!"!

Item was changed:
  ----- Method: TabMorph>>convertToReferenceMorph (in category 'as yet unclassified') -----
  convertToReferenceMorph
  	| aMorph |
  	aMorph := ReferenceMorph new referent: morphToInstall.
  	aMorph position: self position.
+ 	self becomeForward: aMorph.!
- 	self become: aMorph.!