Comment #10 on issue 3609 by cy.delau...@gmail.com: Integrate RPackage http://code.google.com/p/pharo/issues/detail?id=3609 I start to have good result when running all test in a1.3 core image. Failing tests and errors are the same from a standard core image and from the one using RPackage, except: => PharoCorePackageDepenciesTests >> #testFile => PharoCorePackageDepenciesTests >> #testMonticello Both are not necessary due to a wrong behavior of RPackage, but also to some dependies found that were not expected (the expected depencies are harcoded). => ChangeHooksTest>>#testClassRecategorizedEvent2 This one is a bit hard to fix. Here is what you should evaluate to have RPackage integrated to your system: "load rpackage" Gofer new squeaksource: 'PharoTaskForces'; package: 'ConfigurationOfRPackage'; load. (Smalltalk globals at: #ConfigurationOfRPackage) loadDefault. "to be sure that the organizer is initialized before loading anything else:" "(Smalltalk globals at: #RPackageOrganizer) initializeDefault." (Smalltalk globals at: #RPackageOrganizer ) removeMockPackagesFromOldOrganizer. Gofer new squeaksource: 'DelaunayTmpStuffs'; version: 'Monticello-cyrilledelaunay.518'; merge. Gofer new squeaksource: 'DelaunayTmpStuffs'; version: 'MonticelloGUI-cyrilledelaunay.89'; merge. Gofer new squeaksource: 'DelaunayTmpStuffs'; version: 'Tests-cyrilledelaunay.282'; merge. Gofer new squeaksource: 'DelaunayTmpStuffs'; version: 'ScriptLoader13-cyrilledelaunay.41'; merge. Gofer new squeaksource: 'DelaunayTmpStuffs'; version: 'Gofer-Core-cyrilledelaunay.131'; merge. Gofer new squeaksource: 'DelaunayTmpStuffs'; version: 'Gofer-Tests-cyrilledelaunay.130'; merge. Gofer new squeaksource: 'DelaunayTmpStuffs'; version: 'SUnit-cyrilledelaunay.40124'; merge. Gofer new squeaksource: 'DelaunayTmpStuffs'; version: 'SUnitGUI-cyrilledelaunay.72'; merge. Gofer new squeaksource: 'DelaunayTmpStuffs'; version: 'System-Settings-cyrilledelaunay.216'; merge. Gofer new squeaksource: 'DelaunayTmpStuffs'; version: 'FixUnderscores-cyrilledelaunay.21'; merge. Gofer new squeaksource: 'DelaunayTmpStuffs'; version: 'HelpSystem-Core-cyrilledelaunay.77'; merge. Gofer new squeaksource: 'DelaunayTmpStuffs'; version: 'Metacello-Help-cyrilledelaunay.12'; merge. Gofer new squeaksource: 'DelaunayTmpStuffs'; version: 'Metacello-ToolBox-cyrilledelaunay.88'; merge. Gofer new squeaksource: 'DelaunayTmpStuffs'; version: 'SUnitGUI-cyrilledelaunay.72'; merge. Gofer new squeaksource: 'DelaunayTmpStuffs'; version: 'System-Installers-cyrilledelaunay.12'; merge. Gofer new squeaksource: 'DelaunayTmpStuffs'; version: 'System-Settings-cyrilledelaunay.216'; merge. Gofer new squeaksource: 'DelaunayTmpStuffs'; version: 'System-Support-cyrilledelaunay.441'; merge.