I am giving a shot at Snapshotcello since it looks like a superb solution for creating images properly from a complex configuration. From http://www.tudorgirba.com/blog/snapshotcello-take-a-snapshot-when-you-re-rea..., I tried to craft a call for my configuration. I've loaded ConfigurationOfSnapshotcello #development in Pharo20. Then tried the calls and there were some API changes (from the tests, I found out the incantation). Snapshotcello new configurationClass: ConfigurationOfHOWebStack; sourceVersion: #development; targetVersion: '0.3-snapshot'; snapshot. But then I faced a problem with a DNU on 'asEnglishPlural' for a categorization. No big deal, I commented that out as I could live with that. But then I faced something more difficult (the compileSnapshotWithCurrentPackages: aNumber worked in the self generateSnapshotWithCurrentPackages: aNumber... It took a lot of time to get the whole config loaded... (so, the progressbars worked and worked) Then, it failed on giving: "PostMortem: MNU: nil>>ancestry" self workingCopiesFromConfiguration do: [ :each | codeStream tab; tab; nextPutAll: '#('; nextPut: $'; nextPutAll: *each ancestry ancestorString*; nextPutAll: '.mcz'; nextPut: $'; nextPutAll: ' '; nextPut: $'; nextPutAll: (self repositoryNameForWorkingCopy: each); nextPut: $'; nextPutAll: ' '; nextPut: $'; nextPutAll: each package name; nextPut: $'; nextPutAll: ' ) ' ] separatedBy: [ codeStream cr ]. codeStream cr; tab; nextPutAll: ')'. ^ codeStream contents Oops. each is nil... Anyone having faced that? Debugging... Phil