Comment #55 on issue 3583 by tudor.gi...@gmail.com: Shout should only be active in code panes http://code.google.com/p/pharo/issues/detail?id=3583 Ok, I think I see where the confusion came from. If you load the slice of Benjamin in the Pharo 1.2, everything works fine. If you load it in **Pharo-Core** then it does not work. So, I tracked a bit the errors in Pharo-Core. The reason the Workspace does not work is that apparently after the loading of the slice, somehow Workspace class does not understand open anymore. If I add this method, everything works fine. The code browser works fine, but when trying to browse a class, we get an error because a textMorph is not initialized. I do not know why this happens. Can anyone take a look and confirm?