Morph removeSelector: #affiliatedSelector! Morph removeSelector: #completeModificationHash! Morph removeSelector: #constructorString! Morph removeSelector: #duplicateMorphImage:! Morph removeSelector: #haloDelayTime! Morph removeSelector: #modificationHash! Morph removeSelector: #preserveTrash! Morph removeSelector: #readoutForField:! Morph removeSelector: #rememberedColor! Morph removeSelector: #rememberedColor:! Morph removeSelector: #showHiders! Morph removeSelector: #shuffleSubmorphs! Morph removeSelector: #subclassMorph! Morph removeSelector: #uncollapseSketch! Morph removeSelector: #wantsSimpleSketchMorphHandles! ? the cs will the full changes is available at: http://code.google.com/p/pharo/issues/detail?id=2382 Stef But probably rewriting everything would be better