Hello, I am having trouble with a Master/Detail relationship between Project/Expense. I have a Project screen containing a list of expenses (<h:dataTable>) and a computed total expense (@Formula field in Project ). * After adding a new expense I'm redirected back to Project.xhtml but my computed total expense value is wrong...its the old value--until I manually reload the page using the browser. * Deleting an Expense always works great for some reason--calculated totals updated and display w/o crashing. * If I edit an expense and redirect back to Project.xhtml sometimes the computed total value is correctly shown and other times I get a Hibernate exception like this: | 15:52:17,327 ERROR [AbstractFlushingEventListener] Could not synchronize database state with session | org.hibernate.StaleObjectStateException: Row was updated or deleted by another transaction (or unsaved-value mapping was incorrect): [com.paragon.spurs.model.Capex#11] | at org.hibernate.persister.entity.AbstractEntityPersister.check(AbstractEntityPersister.java:1699) | (clip) | I'm not sure if these are two issues are part of the same problem or not. Do I need to invalidate objects in Project.xhtml when I redirect back so the read fresh from the db? (If so, how can I do that?) Am I handling conversation scope right? | <s:button view="/CapexEdit.xhtml" | id="capex" | value="Edit" | propagation="none"> | <f:param name="projectProjectId" value="#{projectHome.instance.projectId}"/> | <f:param name="capexCapexId" value="#{capex.capexId}"/> | <f:param name="capexFrom" value="Project.xhtml"/> | </s:button> | | <!-- SNIP! --> | | <s:button view="/CapexEdit.xhtml" | value="Add Capex" | propagation="begin"> | <f:param name="projectProjectId" value="#{projectHome.instance.projectId}"/> | <f:param name="capexFrom" value="Project.xhtml"/> | <f:param name="capexCapexId"/> | </s:button> | Lots more code--Let me know if it would help to see something in particular. Thanks for any hints--getting a bit warped after several days not being able to get anywhere with this. Greg View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4030010#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...