Using Metacello, just run the following code in your workspace: Installer ensureRecentMetacello. (Installer mc http: 'http://www.hpi.uni-potsdam.de/hirschfeld/squeaksource/') project: 'MetacelloRepository'; install: 'ConfigurationOfDesigner'. (Smalltalk at: #ConfigurationOfDesigner) load. If you want to try the latest snapshot (may be unstable), run this: ConfigurationOfDesigner loadSnapshot. If y