In Pharo 9, the following fails to load: Metacello new baseline: 'Magritte'; repository: 'github://seandenigris/Magritte'; load: 'Magritte-Bootstrap'. Specifically, this method fails to compile: TMagritteBootstrap >> doesNotUnderstand: aMessage ^ self magritteDescription detect: [ :d | d accessor handlesSelector: aMessage selector ] ifFound: [ :handler | handler handleMessage: aMessage for: self ] ifNone: [ super doesNotUnderstand: aMessage ]. But instead signals that `send: #doesNotUnderstand: toSuperOf: TMagritteBootstrap` is ânot supportedâ. There is a comment which is over my head: âTrait methods are copied to the users and only the last literal is updated. For directed super send the literal of the super send should be updated too.â I feel like this was working previously and would like to understand why itâs not now and how to fix it. ----- Cheers, Sean -- Sent from: http://forum.world.st/Pharo-Smalltalk-Developers-f1294837.html