I am checking why the .10 slice for Issue-14261-Delay-refactoring-part-1 is breaking build of the Jenkins > Pharo-4.0-Update-Step-3-Minimal. As an aside, I discovered opening (and closing) Monticello in the image prior to running shrink.st makes it fragile. With the scripts for build 40384 from... https://ci.inria.fr/pharo/job/Pharo-4.0-Update-Step-3-Minimal/243/ 1. I opened the 40384.image with pharo-ui 2. Opened Monticello and browsed to the .10 slice of issue 14261 but did not load it 3. Saved the image 4. Ran my cobbled ./shrink.sh shown here... #!/bin/bash -x IMAGE=Pharo-minimal # wget -O - http://get.pharo.org/vm | bash ./pharo *.image save $IMAGE --delete-old ./pharo $IMAGE.image unloadNB.st ./pharo $IMAGE.image cleanAfterNB.st ./pharo $IMAGE.image prepareShrink.st ./pharo $IMAGE.image shrink.st which fails with... 11 IndentingListItemMorph(Object)>>doesNotUnderstand: #theme 12 IndentingListItemMorph(StringMorph)>>defaultColor 13 IndentingListItemMorph(Morph)>>initialize ... 23 MCWorkingCopyBrowser(Object)>>changed: shrink.st is more robust with the following... MCWorkingCopyBrowser allInstances do: [ :mcwcb | SystemAnnouncer uniqueInstance unsubscribe: mcwcb ]. added to shrink.st. I put it after existing line... SystemAnnouncer uniqueInstance unsubscribe: NOCCompletionTable. HTH, cheers -ben