Hi now I'm going over the class Morph and checking all the methods that gary flagged. I did from A to C and I will continue. I produce a list of possible problems on the wiki: http://code.google.com/p/pharo/wiki/CurrentlyWorkingOn?ts=1227043037&updated... Object currentVocabulary Morph appearsToBeSameCostumeAs: arrowDeltaFor: automaticViewing bringTileScriptingElementsUpToDate bringUpToDate buttonProperties buttonProperties: propertiesOrNil color: sensitiveColor sees: soughtColor colorUnder currentVocabulary hasButtonProperties ensuredButtonProperties isTileScriptingElement PasteUpMorph currentVocabulary currentVocabularyFor: Stef PS: I have to read and fix some seaside chapters to have the right to fix pharo :)