In ConfigurationOfDependencyAnalyser class >> DevelopmentSupport I read... "See the methods in the 'development support' category on the class-side of MetacelloBaseConfiguration. Decide what development support methods you would like to use and copy them the the class-side of your configuration." <apiDocumentation> but MetacelloBaseConfiguration is empty and in package Metacello-Core-Deprecated. So what is the replacement? cheers -ben