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java.lang.NullPointerException: 	at org.kuali.rice.krad.uif.element.GroupValidationMessages.collectIdsFromItems(GroupValidationMessages.java:189)	at org.kuali.rice.krad.uif.element.GroupValidationMessages.collectIdsFromItems(GroupValidationMessages.java:221)	at org.kuali.rice.krad.uif.element.GroupValidationMessages.generateMessages(GroupValidationMessages.java:90)	at org.kuali.rice.krad.uif.element.ValidationMessages.performFinalize(ValidationMessages.java:87)	at org.kuali.rice.krad.uif.service.impl.ViewHelperServiceImpl.performComponentFinalize(ViewHelperServiceImpl.java:1389)	at org.kuali.rice.krad.uif.service.impl.ViewHelperServiceImpl.performComponentFinalize(ViewHelperServiceImpl.java:1413)	at org.kuali.rice.krad.uif.service.impl.ViewHelperServiceImpl.performComponentFinalize(ViewHelperServiceImpl.java:1413)	at org.kuali.rice.krad.uif.service.impl.ViewHelperServiceImpl.performFinalize(ViewHelperServiceImpl.java:1071)	at org.kuali.rice.krad.uif.service.impl.ViewServiceImpl.performViewLifecycle(ViewServiceImpl.java:194)	at org.kuali.rice.krad.uif.service.impl.ViewServiceImpl.buildView(ViewServiceImpl.java:134)	at org.kuali.rice.krad.web.controller.UifControllerHelper.prepareViewForRendering(UifControllerHelper.java:218)	at org.kuali.rice.krad.web.controller.UifControllerHelper.postControllerHandle(UifControllerHelper.java:136)	at org.kuali.rice.krad.web.controller.UifControllerHandlerInterceptor.postHandle(UifControllerHandlerInterceptor.java:85)	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:911)	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827)	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.kuali.rice.krad.web.filter.CharsetFilter.doFilter(CharsetFilter.java:58)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.kuali.rice.kew.web.UserPreferencesFilter.doFilter(UserPreferencesFilter.java:78)	at org.kuali.rice.kew.web.UserPreferencesFilter.doFilter(UserPreferencesFilter.java:62)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.kuali.rice.krad.web.filter.UserLoginFilter.doFilter(UserLoginFilter.java:89)	at org.kuali.rice.krad.web.filter.UserLoginFilter.doFilter(UserLoginFilter.java:77)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.kuali.rice.krad.web.filter.BootstrapFilterChain.doFilter(BootstrapFilter.java:327)	at org.jasig.cas.client.util.HttpServletRequestWrapperFilter.doFilter(HttpServletRequestWrapperFilter.java:75)	at org.kuali.rice.krad.web.filter.BootstrapFilterChain.doFilter(BootstrapFilter.java:320)	at org.jasig.cas.client.validation.AbstractTicketValidationFilter.doFilter(AbstractTicketValidationFilter.java:201)	at org.kuali.rice.krad.web.filter.BootstrapFilterChain.doFilter(BootstrapFilter.java:320)	at org.jasig.cas.client.authentication.AuthenticationFilter.doFilter(AuthenticationFilter.java:107)	at org.kuali.rice.krad.web.filter.BootstrapFilterChain.doFilter(BootstrapFilter.java:320)	at org.jasig.cas.client.session.SingleSignOutFilter.doFilter(SingleSignOutFilter.java:76)	at org.kuali.rice.krad.web.filter.BootstrapFilterChain.doFilter(BootstrapFilter.java:320)	at org.kuali.rice.krad.web.filter.BootstrapFilter.doFilter(BootstrapFilter.java:199)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.kuali.rice.core.web.Log4JContextClearingFilter.doFilterInternal(Log4JContextClearingFilter.java:37)	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.kuali.rice.krad.web.filter.HideWebInfFilter.doFilter(HideWebInfFilter.java:68)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.springframework.web.filter.AbstractRequestLoggingFilter.doFilterInternal(AbstractRequestLoggingFilter.java:193)	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)	at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)	at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)	at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:776)	at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:705)	at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:898)	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)	at java.lang.Thread.run(Thread.java:722)