https://pharo.fogbugz.com/default.asp?13034 SystemAnnouncer uniqueInstance on: ClassModifiedClassDefinition send: #classModified: to: self. Client>>#classModified: ann ann oldClassDefinition == ann newClassDefinition "true" And neither is a "class definition", but the metaclass itself. Workflow interrupted :/ ----- Cheers, Sean -- View this message in context: http://forum.world.st/Issue-13034-ClassModifiedClassDefinition-no-old-defini... Sent from the Pharo Smalltalk Developers mailing list archive at Nabble.com.