Hi. I got an exception when I used the latest released jbpm-jpdl.jar together with jbpm-core-3.3.SNAPSHOT: stream classdesc serialVersionUID = 3959325234224601855, local class serialVersionUID = 520258491083406913 So I added the "old" serialVersion to the class: | private static final long serialVersionUID = 520258491083406913L; | Cheers Bernd View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4180981#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...