Hi,

if I try the examples that comes with struts-menu 2.4.1, I receive the following NPE:

java.lang.NullPointerException
at java.util.Hashtable.put(Hashtable.java:393)
at org.apache.jasper.runtime.PageContextImpl.setAttribute(PageContextImpl.java:234)
at net.sf.navigator.taglib.UseMenuDisplayerTag.doStartTag(UseMenuDisplayerTag.java:223)
at org.apache.jsp.coolmenu4_jsp._jspx_meth_menu_useMenuDisplayer_0(coolmenu4_jsp.java:159)
at org.apache.jsp.coolmenu4_jsp._jspService(coolmenu4_jsp.java:83)

This is caused because the id attribute on the useMenuDisplayer tag is not specified in the examples.
For instance, the following JSP code causes this exception:

<menu:useMenuDisplayer name="CoolMenu" bundle="org.apache.struts.action.MESSAGE">
    <menu:displayMenu name="ToDoListMenuFile"/>
    <menu:displayMenu name="ToDoListMenuEdit"/>
    <menu:displayMenu name="CaseDetailMenuCase"/>
</menu:useMenuDisplayer>

After adding an id attribute, everything worked well