Andreas Raab uploaded a new version of Morphic to project The Trunk:
http://source.squeak.org/trunk/Morphic-kb.331.mcz

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

Name: Morphic-kb.331
Author: kb
Time: 9 February 2010, 10:14:18.611 am
UUID: cada91cc-8612-48f5-9353-2f18709a5e62
Ancestors: Morphic-nice.330

 - fix: Pressing shift-escape in a TextEditor throws a must be boolean error. Fix this by ensuring that TextEditor >> offerMenuFromEsc: always returns true

=============== Diff against Morphic-nice.330 ===============

Item was changed:
  ----- Method: TextEditor>>offerMenuFromEsc: (in category 'menu commands') -----
  offerMenuFromEsc: characterStream 
  	"The escape key was hit while the receiver has the keyboard focus; take action"
  
+ 	ActiveEvent shiftPressed ifFalse: [
+ 		self raiseContextMenu: characterStream ].
+ 	^true!
- 	^ ActiveEvent shiftPressed
- 		ifFalse:
- 			[self raiseContextMenu: characterStream]!