Has anybody ever gotton this error before usings Struts Menu?

The menu-config.xml is a valid xml file but it gives me this error when I start the application.

javax.servlet.ServletException: Failure initializing struts-menu: Error parsing resource file: /WEB-INF/menu-config.xml nested exception is: Error at (19, -1: access denied (java.lang.reflect.ReflectPermission suppressAccessChecks) at net.sf.navigator.menu.MenuPlugIn.init(MenuPlugIn.java:67) at org.apache.struts.action.ActionServlet.initModulePlugIns(ActionServlet.java:1158) at org.apache.struts.action.ActionServlet.init(ActionServlet.java:473) at javax.servlet.GenericServlet.init(GenericServlet.java:258) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:921) at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:658) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:229) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:505) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:212) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:505) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:203) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:505) at com.iplanet.ias.web.connector.nsapi.NSAPIProcessor.process(NSAPIProcessor.java:158) at com.iplanet.ias.web.WebContainer.service(WebContainer.java:598)

Moving to OT > Soft Dev (not ME related)

Also I've never seen that error, looks strange.