Looks like org.richfaces.model.selection.SelectionRange need to be Serializable?
2007-10-03 15:14:35,166 ERROR [org.apache.myfaces.lifecycle.PhaseListenerManager] Exception in PhaseListener RENDER_RESPONSE(6) afterPhase
javax.faces.FacesException: java.io.NotSerializableException: org.richfaces.model.selection.SelectionRange
at org.apache.myfaces.shared_impl.util.StateUtils.getAsByteArray(StateUtils.java:191)
at org.apache.myfaces.shared_impl.util.StateUtils.construct(StateUtils.java:151)
at org.apache.myfaces.renderkit.html.HtmlResponseStateManager.writeState(HtmlResponseStateManager.java:95)
at org.apache.myfaces.application.jsp.JspStateManagerImpl.writeState(JspStateManagerImpl.java:395)
at org.jboss.seam.jsf.SeamStateManager.writeState(SeamStateManager.java:66)
at org.ajax4jsf.application.AjaxStateManager.writeState(AjaxStateManager.java:136)
at org.ajax4jsf.context.AjaxContextImpl.saveViewState(AjaxContextImpl.java:499)
at org.ajax4jsf.event.AjaxPhaseListener.afterPhase(AjaxPhaseListener.java:81)
at org.apache.myfaces.lifecycle.PhaseListenerManager.informPhaseListenersAfter(PhaseListenerManager.java:89)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:131)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:138)
