Users has encounterd a exception when starting Tomcat after upgrading from zk EE 5.0.7 to 5.0.8.
When restarting Tomcat, an exception happens during session deserialization. The exception said Spring failed creating session-scoped bean, because http request doesn't exist.
(The full stacktrace is in "catalina 2011-10-26.log", line 644)

User provided reproducing step:

To reproduce this scenario, I start up Tomcat (with a clean install, work directory is deleted, etc.), I then hit the local site from a browser. It forces me to log in, then from a second screen select an "environment" (test vs. production for example) after which I reach the main page. From there I just click on one of our menu items which loads a tab panel into the main screen's tabbox. Once I've done that, I do a graceful shutdown of Tomcat - you can see this start in the catalina log about line 360. I then restart Tomcat. At line 644 in the catalina log is where the specific issue I'm trying to solve starts. homeMainPanelController is a prototype scoped bean that extends GenericForwardComposer. userWorkspace is a session scoped bean that is defined as a field of homeMainPanelController with the @Inject annotation.

We have been using this same structure for many months now without any issues starting/restarting Tomcat but started receiving these exceptions when attempting to use ZK 5.0.8/5.0.9 EE

Users environment

• We have the RequestContextListener and ContextLoaderListener registered in our web.xml
• In zk.xml, we don't have the event thread enabled, so I'm assuming it is now disabled by default
• The ui-factory-class in zk.xml is configured as org.zkoss.zk.ui.http.SerializableUIFactory
• We have one session scoped Spring managed bean that seems to be causing the issue.
• We aren't utilizing any the custom zk scopes yet.
• We are running Tomcat 7 often clustered with an Apache front end.

configuration and some source code are attached.

Users Class Structure

@Named
@Scope("session")
public class UserWorkspace implements Serializable{
}

public abstract class BaseController extends GenericForwardComposer{
  @Inject
  protected UserWorkspace userWorkspace;
}

@Named
@Scope("prototype")
public class HomeMainPanelController extends BaseController implements
    EventListener{
}