Hi Markus, what is the correct way to load NewCompiler in a PharoCore image. I am loading with: Gofer it squeaksource: 'NewCompiler'; package: 'NewCompiler'; load. But it has dependencies on SmaCCParserError. Then looking at the NewCompilerLoader >> loadPackages loadPackages self loadLatestPackage: 'AST-Core' from: 'http://www.squeaksource.com/rb/'. " self loadLatestPackage: 'SmaCC-' from: 'http://www.squeaksource.com/SmaccDevelopment/'. self loadLatestPackage: 'NewParser-' from: 'http://www.squeaksource.com/AST/'." self loadLatestPackage: 'NewCompiler-' from: 'http://www.squeaksource.com/NewCompiler/'. "Preferences setPreference: #compileUseNewCompiler toValue: true. Compiler recompileAll." "no, not working yet" so this are all the dependencies? Has NewCompiler teste on PharoCore? Is there a gofer script to load it? Or better a Metacello configuration? If you can give me the dependencies I can create the Metacello configuration. Right now I am creating the configurations for Magma and through WriteBarrier, they depend on NewCompiler. Thanks -- Miguel Cobá http://miguel.leugim.com.mx