The other cause of the classloading problems is that the unpacked deployments url is wrong. | 19:12:04,289 DEBUG [RepositoryClassLoader] setRepository, repository=org.jboss.mx.loading.UnifiedLoaderRepository3@987a33, cl=org.jboss.mx.loading.UnifiedClassLoader3@12fb0af{ url=file:/home/ejort/mc-vdf-work/build/output/jboss-5.0.0.Beta/server/default/deploy/uuid-key-generator.sar ,addedOrder=0} | which should be: url=file:/home/ejort/mc-vdf-work/build/output/jboss-5.0.0.Beta/server/default/deploy/uuid-key-generator.sar/ i.e. the contents of the directory not the directory. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3971994#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...