NPE from ReorderQuestionsListener.processValueChange

Instructor authoring an assessment. 2-2-x, r15437

usage-session: d482ad95-bae0-487c-0041-7465c69054a3
stack-trace-digest: 9A574983E37C350834A16AE4972F11ABDDEECF13
sakai-version: 2.2
service-version: [r15437-r1669]
app-server: vula2b
user-agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)
browser-id: Win-InternetExplorer
IP: 137.158.36.145
request-path: /portal/tool/18e357be-eddb-48c8-80f2-8f610ca4a739/jsf/author/editAssessment
time: 02-Oct-2006 14:36:21

stack trace:

org.sakaiproject.tool.api.ToolException
at org.sakaiproject.portal.charon.CharonPortal.forwardTool(CharonPortal.java:1262)
caused by: javax.servlet.ServletException
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
caused by: java.lang.NullPointerException
at org.sakaiproject.tool.assessment.ui.listener.author.ReorderQuestionsListener.processValueChange(ReorderQuestionsListener.java:82)
at javax.faces.event.ValueChangeEvent.processListener(ValueChangeEvent.java:103)
at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:649)
at javax.faces.component.UIInput.broadcast(UIInput.java:486)
at javax.faces.component.UIData.broadcast(UIData.java:657)
at javax.faces.component.UIData.broadcast(UIData.java:657)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:249)
at javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:343)
at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:78)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:90)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:501)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
at org.sakaiproject.jsf.util.JsfTool.dispatch(JsfTool.java:221)
at org.sakaiproject.jsf.util.JsfTool.doPost(JsfTool.java:256)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:359)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
at org.sakaiproject.tool.impl.ActiveToolComponent$MyActiveTool.forward(ActiveToolComponent.java:339)
at org.sakaiproject.portal.charon.CharonPortal.forwardTool(CharonPortal.java:1262)
at org.sakaiproject.portal.charon.CharonPortal.doTool(CharonPortal.java:1214)
at org.sakaiproject.portal.charon.CharonPortal.doPost(CharonPortal.java:882)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:532)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:199)
at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:282)
at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:754)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:684)
at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:876)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)