Chris Muller uploaded a new version of Tools to project Squeak 4.5:
http://source.squeak.org/squeak45/Tools-cmm.518.mcz

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

Name: Tools-cmm.518
Author: cmm
Time: 3 February 2014, 3:40:50.779 pm
UUID: 6277da39-26fa-467e-9b30-244ee58b4000
Ancestors: Tools-topa.517

References through named instVars are strong even on weak classes.  Fix PointerFinder behavior accordingly.
	Add comment reminding about the purpose of Object>>#shouldFollowOutboundPointers.

=============== Diff against Tools-topa.517 ===============

Item was changed:
  ----- Method: Object>>shouldFollowOutboundPointers (in category '*Tools-Debugger') -----
  shouldFollowOutboundPointers
+ 	"Allow other subclasses of ProtoObject to hook this method."
  	(self class isPointers or: [ self isCompiledMethod ]) ifFalse: [ ^ false ].
+ 	^ (self class isWeak not or: [ self class instSize > 0 ]) and: [ self isLiteral not ]!
- 	^ self class isWeak not and: [ self isLiteral not ]!