Hello kukeltje, hi ALClientView, i can't follow you technicaly when you mean replace ehcache with a newer version. Untill know i didn't have to work with the ehcache and always use the default one. Please can you give me moreexplaination how to switch to a new ehcache version. For back ground i was using bpel-1.0-alpha4 and jboss-4.0.3.SP1 and every think works well. For the logging feature i need to switch to jbpm-bpel-1.1-beta1. In the tutorial they advice to switch to 4.0.4-AG Thanks in advance for your contribution. Bertrand View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3969584#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...