Andreas Raab uploaded a new version of Kernel to project The Trunk:
http://source.squeak.org/trunk/Kernel-ar.231.mcz

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

Name: Kernel-ar.231
Author: ar
Time: 26 August 2009, 9:44:33 am
UUID: 0fa0cc93-b060-8546-b78f-afa7b8429e80
Ancestors: Kernel-ar.230

BlockClosure>>asMinimalRepresentation needs to return self, just like the comment says.

=============== Diff against Kernel-ar.230 ===============

Item was changed:
  ----- Method: BlockClosure>>asMinimalRepresentation (in category 'events-support') -----
  asMinimalRepresentation
  	"For use in the when:evaluate: protocol, i.e.,
  		foo when: #bar evaluate:[self handleBar].
  	Return the receiver."
+ 	^self!
- 	^true!