I suspect you have different versions of the class on the classpath. Caused by: java.io.InvalidClassException: com.company.generated.MyNode; local class incompatible: | stream classdesc serialVersionUID = 1, local class serialVersionUID = -7258818124315218931 JBoss is not generating that local class serialVersionUID = -7258818124315218931; that comes from the JRE, which must be seeing a different version of the class. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4260147#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...