Tobias Pape uploaded a new version of Kernel to project The Trunk:
http://source.squeak.org/trunk/Kernel-topa.920.mcz

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

Name: Kernel-topa.920
Author: topa
Time: 14 April 2015, 10:20:01.78 am
UUID: 22c1b724-e8e2-486b-b91b-49405ebc489a
Ancestors: Kernel-mt.919

Remove spurious -- all -- category that crept into Object

=============== Diff against Kernel-mt.919 ===============

Item was changed:
  (PackageInfo named: 'Kernel') postscript: '"Fix accidental non-weak arrays in ObsoleteSubclasses values"
  Behavior classPool at: #ObsoleteSubclasses ifPresent: [:os | 
  	os keysAndValuesDo: [:superclass :obsoletes | 
  		obsoletes class isWeak ifFalse: [
+ 			os at: superclass put: (obsoletes as: WeakArray)]]].
+ "Remove spurious -- all -- category that crept into Object"
+ [Object organization removeCategory: #''-- all --''.
+ ] on: Error do: [:e|
+ 	"Category not empty, silently leave it there"
+ 	e return].'!
- 			os at: superclass put: (obsoletes as: WeakArray)]]].'!