Bug 794016 (JBEPP-1087)

project_key: JBEPP

When trying to add a container to a portal layout. I get the following NPE: 

13:54:40,091 ERROR [portal:UIPortalApplication] Error during the processAction phase
java.lang.NullPointerException
	at org.exoplatform.portal.webui.portal.UIPortalComponentActionListener$MoveChildActionListener.execute(UIPortalComponentActionListener.java:286)
	at org.exoplatform.webui.event.Event.broadcast(Event.java:89)
	at org.exoplatform.webui.core.lifecycle.Lifecycle.processAction(Lifecycle.java:56)
	at org.exoplatform.webui.core.UIComponent.processAction(UIComponent.java:133)
	at org.exoplatform.portal.webui.workspace.UIPortalApplicationLifecycle.processAction(UIPortalApplicationLifecycle.java:78)
	at org.exoplatform.portal.webui.workspace.UIPortalApplicationLifecycle.processAction(UIPortalApplicationLifecycle.java:37)
	at org.exoplatform.webui.core.UIComponent.processAction(UIComponent.java:133)
	at org.exoplatform.webui.core.UIApplication.processAction(UIApplication.java:120)
	at org.exoplatform.portal.application.PortalRequestHandler.execute(PortalRequestHandler.java:110)
	at org.exoplatform.web.WebAppController.service(WebAppController.java:165)
	at org.exoplatform.portal.application.PortalController.onService(PortalController.java:127)
	at org.exoplatform.container.web.AbstractHttpServlet.service(AbstractHttpServlet.java:132)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.exoplatform.web.filter.ExtensibleFilter$ExtensibleFilterChain.doFilter(ExtensibleFilter.java:112)
	at org.exoplatform.web.filter.ExtensibleFilter.doFilter(ExtensibleFilter.java:84)
	at org.exoplatform.web.filter.GenericFilter.doFilter(GenericFilter.java:66)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.exoplatform.web.CacheUserProfileFilter.doFilter(CacheUserProfileFilter.java:73)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.exoplatform.frameworks.jcr.web.ThreadLocalSessionProviderInitializedFilter.doFilter(ThreadLocalSessionProviderInitializedFilter.java:116)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.exoplatform.services.security.web.SetCurrentIdentityFilter.doFilter(SetCurrentIdentityFilter.java:88)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.exoplatform.portal.application.localization.LocalizationFilter.doFilter(LocalizationFilter.java:179)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.exoplatform.web.login.ClusteredSSOFilter.doFilter(ClusteredSSOFilter.java:73)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.exoplatform.container.web.PortalContainerFilter.doFilter(PortalContainerFilter.java:69)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
	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:235)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:183)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:525)
	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:95)
	at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
	at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:599)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:451)
	at java.lang.Thread.run(Thread.java:636)