Hi, I worked for some days with the new version of Moose in which the Group and MooseModel have AbstractGroup as super class, and it seems to work just fine. As a consequence, I now published this as development so it gets loaded with Moose Config. Please let me know if you encounter any problems due to this change. Doru -- www.tudorgirba.com www.tudorgirba.com/blog "Problem solving efficiency grows with the abstractness level of problem understanding."