Bert Freudenberg uploaded a new version of Tools to project The Trunk:
http://source.squeak.org/trunk/Tools-bf.371.mcz

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

Name: Tools-bf.371
Author: bf
Time: 25 July 2011, 5:25:41.587 pm
UUID: 85705aa7-39ca-445b-bfbd-1f6ffb99ff89
Ancestors: Tools-bf.370

Fix DNU by copying Browser>>toggleBreakOnEntry to MessageSet.

=============== Diff against Tools-bf.370 ===============

Item was added:
+ ----- Method: MessageSet>>toggleBreakOnEntry (in category 'breakpoints') -----
+ toggleBreakOnEntry
+ 	"Install or uninstall a halt-on-entry breakpoint"
+ 
+ 	| selectedMethod |
+ 	self selectedClassOrMetaClass ifNil: [ ^self].
+ 	selectedMethod := self selectedClassOrMetaClass >> self selectedMessageName.
+ 	selectedMethod hasBreakpoint
+ 		ifTrue:
+ 			[BreakpointManager unInstall: selectedMethod]
+ 		ifFalse:
+ 			[BreakpointManager 
+ 				installInClass: self selectedClassOrMetaClass
+ 				selector: self selectedMessageName].
+ 	self changed: #messageList!