Getting error in permission management screen

Hi all,

I am getting the below error when configuring permisson to My webmethods Application.
Can somebody suggest me a solution?

at javax.el.BeanELResolver.getValue(BeanELResolver.java:261)
at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:143)
at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:72)
at com.sun.el.parser.AstValue.getValue(AstValue.java:138)
at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:206)
at com.sun.faces.application.ValueBindingValueExpressionAdapter.getValue(ValueBindingValueExpressionAdapter.java:113)
at com.webmethods.caf.faces.application.CAFValueBinding.getValue(CAFValueBinding.java:57)
at com.webmethods.caf.faces.component.table.html.DataTable.getValue(DataTable.java:563)
at com.webmethods.caf.faces.component.table.html.DataTable.getContentProvider(DataTable.java:1714)
at com.webmethods.caf.faces.component.table.html.DataTable.getContentProvider(DataTable.java:1701)
at com.webmethods.caf.faces.component.table.html.DataTable.isRowAvailable(DataTable.java:247)
at com.webmethods.caf.faces.component.table.html.DataTable.saveDescendantState(DataTable.java:1639)
at com.webmethods.caf.faces.component.table.html.DataTable.setRowIndex(DataTable.java:398)
at com.webmethods.caf.faces.render.html.table.TableRenderer.readTableInputs(TableRenderer.java:772)
at com.webmethods.caf.faces.render.html.table.TableRenderer.decode(TableRenderer.java:78)
at javax.faces.component.UIComponentBase.decode(UIComponentBase.java:789)
at com.webmethods.caf.faces.component.table.html.DataTable.processDecodes(DataTable.java:867)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1026)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1026)
at com.webmethods.caf.faces.component.panel.BaseHideablePanel.processDecodes(BaseHideablePanel.java:130)
at javax.faces.component.UIForm.processDecodes(UIForm.java:208)
at com.webmethods.caf.faces.component.command.html.CommandForm.processDecodes(CommandForm.java:61)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1026)
at javax.faces.component.UIComponentBase.processDecodes(UIComponentBase.java:1026)
at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:540)
at com.webmethods.caf.faces.component.ViewRoot.processDecodes(ViewRoot.java:100)
at com.webmethods.caf.faces.portlet.PortletLifecycle$ApplyRequestValuesPhase.execute(PortletLifecycle.java:672)
at com.webmethods.caf.faces.portlet.PortletLifecycle.phase(PortletLifecycle.java:261)
at com.webmethods.caf.faces.portlet.PortletLifecycle.execute(PortletLifecycle.java:151)
at com.webmethods.caf.faces.portlet.FacesPortlet.processAction(FacesPortlet.java:301)
at com.webmethods.portal.framework.portletcontainer.impl.PortletApplicationHandler.process(PortletApplicationHandler.java:480)
at com.webmethods.portal.framework.portletcontainer.servlet.PortletServlet.service(PortletServlet.java:58)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:390)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:327)
at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:126)
at com.webmethods.portal.framework.portletcontainer.PortletContainer.dispatch(PortletContainer.java:219)
at com.webmethods.portal.framework.portletcontainer.PortletContainer.process(PortletContainer.java:130)
at com.webmethods.portal.framework.portletcontainer.PortletContainer.processPortletAction(PortletContainer.java:108)
at com.webmethods.portal.framework.portlet.beans.rest.RestfulPCAHandler.handle(RestfulPCAHandler.java:194)
at com.webmethods.portal.framework.dispatch.DispatchManager.handle(DispatchManager.java:448)
at com.webmethods.portal.framework.dispatch.DispatchManager.handleDispatch(DispatchManager.java:379)
at com.webmethods.portal.framework.impl.PortalServlet.service(PortalServlet.java:280)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at com.webmethods.portal.framework.impl.NTLMFilter.doFilter(NTLMFilter.java:50)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.webmethods.caf.faces.servlet.GZIPFilter.doFilter(GZIPFilter.java:42)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:938)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:451)
Caused by: javax.el.ELException: java.lang.NullPointerException
at javax.el.BeanELResolver.getValue(BeanELResolver.java:266)
at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:143)
at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:72)
at com.sun.el.parser.AstValue.getValue(AstValue.java:138)
at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:206)
at com.sun.faces.application.ValueBindingValueExpressionAdapter.getValue(ValueBindingValueExpressionAdapter.java:113)
… 79 more
Caused by: java.lang.NullPointerException
at com.webmethods.portal.service.access.impl.MwsObjectAclManager.getAccess(MwsObjectAclManager.java:758)
at com.webmethods.portal.service.access.impl.WMAppsAclManager.getAceSetForResource(WMAppsAclManager.java:533)
at com.webmethods.caf.permissionsedit.PermissionsEditDefaultviewView.loadAcls(PermissionsEditDefaultviewView.java:293)
at com.webmethods.caf.permissionsedit.PermissionsEditDefaultviewView.getPrincipalModels(PermissionsEditDefaultviewView.java:274)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at javax.el.BeanELResolver.getValue(BeanELResolver.java:261)
… 84 more
2012-12-26 10:57:21 IST (jsf:INFO) [RID:467] - Failed to evaluate binding expression: “#{PermissionsEditDefaultviewView.principalModels}”: Failed to evaluate binding expression: “#{PermissionsEditDefaultviewView.principalModels}”
2012-12-26 10:57:21 IST (Framework:INFO) [RID:468] - Processing request [bt21l6enwgs6:SysAdmin] http://xx.xx.x.xxx:8585/meta/default/wm_xt_fabricfolder/0000006425 (GET)
2012-12-26 10:57:21 IST (jsf:INFO) [RID:468] - Failed to evaluate binding expression: “#{PermissionsEditDefaultviewView.principalModels}”: Failed to evaluate binding expression: “#{PermissionsEditDefaultviewView.principalModels}”

Thanks,
tmv