"camunda" wrote : @Tom: Classloading work pretty well if you correctly use scoped classloading of AS with different parallel versions if the deployer and service take care of it correctly. The deployer I wrote for jbpm 3 works productive at the customer without problems... | my question is: would it have been possible at this client to work without versioned classes by just using different classnames if a class needs to be changed ? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4210946#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...