title: Ajax not rendering new data for <h:selectOneMenu>
body: <p>I am trying to update a selectOneMenu from the results of another selectOneMenu.</p>
  
  <p>When group is selected the user menu should be updated.</p>
  
  <p>I have verified that the data for the user menu is being updated.  It is not being rendered however.</p>
  
  <p>Currently running Primefaces 3.4.2 and JSF 2.1</p>
  
  <pre><code>&lt;ui:composition&gt;
  &lt;br/&gt;&lt;br/&gt;
  &lt;h:form id="transferForm"&gt;            
      &lt;h:panelGrid columns="1" style="width: 500px;margin: auto;text-align: center"  &gt;
          &lt;h:panelGroup&gt;
              &lt;h:outputLabel for="group" value="Group" /&gt;
              &lt;h:selectOneMenu id="group" value="#{projectBean.transferUtil.selectedTransferGroup}" &gt;
                  &lt;f:selectItems value="#{projectBean.transferUtil.transferGroups}" /&gt;     
                  &lt;f:ajax execute="group" render="user" /&gt;
              &lt;/h:selectOneMenu&gt;
  
  
              &lt;br /&gt;
  
              &lt;h:outputLabel for="user" value="User" /&gt;
              &lt;h:selectOneMenu id="user" value="#{projectBean.transferUtil.selectedTransferUser}" required="true" requiredMessage="Select User" &gt;
                  &lt;f:selectItems value="#{projectBean.transferUtil.transferUsers}" /&gt;
              &lt;/h:selectOneMenu&gt;
          &lt;/h:panelGroup&gt;
          &lt;p:commandButton id="projectTransferButton" action="#{projectBean.transferUtil.transfer}" value="Transfer" update=":projtabs,:growlForm:growlMesg"&gt;
              &lt;f:setPropertyActionListener target="#{projectBean.activeTab}" value="#{projectBean.project_tab_index}" /&gt;
          &lt;/p:commandButton&gt;
      &lt;/h:panelGrid&gt;
  &lt;/h:form&gt;
  &lt;br/&gt;&lt;br/&gt;
  </code></pre>
  
  <p></p>
  
  <p>[EDIT]</p>
  
  <p>Alright this is the error I am getting.</p>
  
  <pre><code>&lt;?xml version='1.0' encoding='UTF-8'?&gt;
  &lt;partial-response&gt;&lt;error&gt;&lt;error-name&gt;class java.lang.IllegalArgumentException&lt;/error-name&gt;&lt;error-message&gt;&lt;![CDATA[rss02.1 OPERA]]&gt;&lt;/error-message&gt;&lt;/error&gt;&lt;/partial-response&gt;
  </code></pre>
  
  <p>And this is the code in question.</p>
  
  <pre><code>    &lt;p:dataGrid var="area" value="#{projectBean.projectUtil.project.rssAreas}" columns="1"&gt;
          &lt;p:column&gt;
              &lt;h:selectBooleanCheckbox id="rss#{area.shortName}" label="#{area.name}" value="#{area.active}" /&gt;
              &lt;h:outputText value="#{area.name}" /&gt;
          &lt;/p:column&gt;
      &lt;/p:dataGrid&gt;  
  </code></pre>