First load the configuration. For Pharo: Gofer new squeaksource: 'MetacelloRepository'; package: 'ConfigurationOfSeaside'; load. For Squeak: - load the latest version of ConfigurationOfSeaside from http://www.squeaksource.com/MetacelloRepository Then pick the Seaside variant you want to load: "Seaside 2.8" ConfigurationOfSeaside project latestVersion load: 'Seaside 2.8'. ConfigurationOfSeaside project latestVersion load: 'Seaside 2.8 Examples'. ConfigurationOfSeaside project latestVersion load: 'Magritte'. ConfigurationOfSeaside project latestVersion load: 'Magritte Tests'. ConfigurationOfSeaside project latestVersion load: 'Pier'. ConfigurationOfSeaside project latestVersion load: 'Pier Tests'. ConfigurationOfSeaside project latestVersion load: 'Pier AddOns'. "Seaside 3.0" ConfigurationOfSeaside project latestVersion load: 'Seaside 3.0'. ConfigurationOfSeaside project latestVersion load: 'Seaside 3.0 Tests'. ConfigurationOfSeaside project latestVersion load: 'Magritte2'. ConfigurationOfSeaside project latestVersion load: 'Magritte2 Tests'. ConfigurationOfSeaside project latestVersion load: 'Pier2'. ConfigurationOfSeaside project latestVersion load: 'Pier2 Tests'. ConfigurationOfSeaside project latestVersion load: 'Pier2 AddOns'. I've tested the various loads with PharoCore-1.0-10508rc2 and Squeak3.11-8931-alpha. The tests aren't 100% green on either platform... Dale