Hy, i tried to use the seam gen shell script in my Ubuntu O.S and i had the following exception: root@carlosabreu-laptop:/opt/jboss-seam-1.2.1.GA# sh seam generate-entities Buildfile: build.xml validate-workspace: validate-project: generate-entities: [hibernate] Executing Hibernate Tool with a JDBC Configuration (for reverse engineering) [hibernate] 1. task: hbm2java (Generates a set of .java files) BUILD FAILED java.lang.NoClassDefFoundError: net.sf.cglib.core.DebuggingClassWriter$1 Does anyone know what is happening?? Thanks. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4051365#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...