Thanks - I will try your suggestion of using transient in a couple of places. If I had a remote idea of what was throwing the exception I would show it. However, not one of my classes is in the stack trace. Which means it has be to something in the conversation I am using. I do use a logging field on a lot of my entity/sfsb classes of the form: protected static Log log = LogFactory.getLog(Sale.class); This is hopefully the source of the error. Thanks again, Chris.... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3961954#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...