Server Monitors / Adding new monitors

Hi,

we are evaluating AppManager for one of our customers.
now we have the problem, if we want to view resource information about our servers we got a nullpointer exception

----- Root Cause -----
java.lang.NullPointerException
at com.adventnet.appmanager.hostresource.struts.HostResourceAction.execute(HostResourceAction.java:568)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)