Jenkins Console Output Error -

we've been using jenkins while now, we've added couple plug-ins configuration , our console output not showing in real-time anymore, big fat java error! i've removed offending plug-ins (emotional jenkins , green spot) in attempt fix problem, still errors. console output plain text fine though there's no problem there. has experienced or know might problem? i've installed plug-ins again see if can find "extra" configuration added need remove error follows: - (this happens while build runs, console output blank showing nothing after it's finished)

stack trace  javax.servlet.servletexception: java.lang.nullpointerexception     @ org.kohsuke.stapler.stapler.tryinvoke(stapler.java:796)     @ org.kohsuke.stapler.stapler.invoke(stapler.java:876)     @ org.kohsuke.stapler.metaclass$4.dodispatch(metaclass.java:211)     @ org.kohsuke.stapler.namebaseddispatcher.dispatch(namebaseddispatcher.java:53)     @ org.kohsuke.stapler.stapler.tryinvoke(stapler.java:746)     @ org.kohsuke.stapler.stapler.invoke(stapler.java:876)     @ org.kohsuke.stapler.metaclass$13.dispatch(metaclass.java:411)     @ org.kohsuke.stapler.stapler.tryinvoke(stapler.java:746)     @ org.kohsuke.stapler.stapler.invoke(stapler.java:876)     @ org.kohsuke.stapler.metaclass$6.dodispatch(metaclass.java:249)     @ org.kohsuke.stapler.namebaseddispatcher.dispatch(namebaseddispatcher.java:53)     @ org.kohsuke.stapler.stapler.tryinvoke(stapler.java:746)     @ org.kohsuke.stapler.stapler.invoke(stapler.java:876)     @ org.kohsuke.stapler.metaclass$6.dodispatch(metaclass.java:249)     @ org.kohsuke.stapler.namebaseddispatcher.dispatch(namebaseddispatcher.java:53)     @ org.kohsuke.stapler.stapler.tryinvoke(stapler.java:746)     @ org.kohsuke.stapler.stapler.invoke(stapler.java:876)     @ org.kohsuke.stapler.stapler.invoke(stapler.java:649)     @ org.kohsuke.stapler.stapler.service(stapler.java:238)     @ javax.servlet.http.httpservlet.service(httpservlet.java:848)     @ org.eclipse.jetty.servlet.servletholder.handle(servletholder.java:686)     @ org.eclipse.jetty.servlet.servlethandler$cachedchain.dofilter(servlethandler.java:1494)     @ hudson.util.pluginservletfilter$1.dofilter(pluginservletfilter.java:123)     @ hudson.plugins.scm_sync_configuration.extensions.scmsyncconfigurationfilter$1.call(scmsyncconfigurationfilter.java:46)     @ hudson.plugins.scm_sync_configuration.scmsyncconfigurationdataprovider.providerequestduring(scmsyncconfigurationdataprovider.java:103)     @ hudson.plugins.scm_sync_configuration.extensions.scmsyncconfigurationfilter.dofilter(scmsyncconfigurationfilter.java:42)     @ hudson.util.pluginservletfilter$1.dofilter(pluginservletfilter.java:120)     @ hudson.util.pluginservletfilter.dofilter(pluginservletfilter.java:114)     @ org.eclipse.jetty.servlet.servlethandler$cachedchain.dofilter(servlethandler.java:1482)     @ hudson.security.csrf.crumbfilter.dofilter(crumbfilter.java:85)     @ org.eclipse.jetty.servlet.servlethandler$cachedchain.dofilter(servlethandler.java:1482)     @ hudson.security.chainedservletfilter$1.dofilter(chainedservletfilter.java:84)     @ hudson.security.unwrapsecurityexceptionfilter.dofilter(unwrapsecurityexceptionfilter.java:51)     @ hudson.security.chainedservletfilter$1.dofilter(chainedservletfilter.java:87)     @ jenkins.security.exceptiontranslationfilter.dofilter(exceptiontranslationfilter.java:117)     @ hudson.security.chainedservletfilter$1.dofilter(chainedservletfilter.java:87)     @ org.acegisecurity.providers.anonymous.anonymousprocessingfilter.dofilter(anonymousprocessingfilter.java:125)     @ hudson.security.chainedservletfilter$1.dofilter(chainedservletfilter.java:87)     @ org.acegisecurity.ui.rememberme.remembermeprocessingfilter.dofilter(remembermeprocessingfilter.java:135)     @ hudson.security.chainedservletfilter$1.dofilter(chainedservletfilter.java:87)     @ org.acegisecurity.ui.abstractprocessingfilter.dofilter(abstractprocessingfilter.java:271)     @ hudson.security.chainedservletfilter$1.dofilter(chainedservletfilter.java:87)     @ jenkins.security.basicheaderprocessor.dofilter(basicheaderprocessor.java:93)     @ hudson.security.chainedservletfilter$1.dofilter(chainedservletfilter.java:87)     @ org.acegisecurity.context.httpsessioncontextintegrationfilter.dofilter(httpsessioncontextintegrationfilter.java:249)     @ hudson.security.httpsessioncontextintegrationfilter2.dofilter(httpsessioncontextintegrationfilter2.java:67)     @ hudson.security.chainedservletfilter$1.dofilter(chainedservletfilter.java:87)     @ hudson.security.chainedservletfilter.dofilter(chainedservletfilter.java:76)     @ hudson.security.hudsonfilter.dofilter(hudsonfilter.java:171)     @ org.eclipse.jetty.servlet.servlethandler$cachedchain.dofilter(servlethandler.java:1482)     @ org.kohsuke.stapler.compression.compressionfilter.dofilter(compressionfilter.java:49)     @ org.eclipse.jetty.servlet.servlethandler$cachedchain.dofilter(servlethandler.java:1482)     @ hudson.util.characterencodingfilter.dofilter(characterencodingfilter.java:81)     @ org.eclipse.jetty.servlet.servlethandler$cachedchain.dofilter(servlethandler.java:1482)     @ org.kohsuke.stapler.diagnosticthreadnamefilter.dofilter(diagnosticthreadnamefilter.java:30)     @ org.eclipse.jetty.servlet.servlethandler$cachedchain.dofilter(servlethandler.java:1474)     @ org.eclipse.jetty.servlet.servlethandler.dohandle(servlethandler.java:499)     @ org.eclipse.jetty.server.handler.scopedhandler.handle(scopedhandler.java:137)     @ org.eclipse.jetty.security.securityhandler.handle(securityhandler.java:533)     @ org.eclipse.jetty.server.session.sessionhandler.dohandle(sessionhandler.java:231)     @ org.eclipse.jetty.server.handler.contexthandler.dohandle(contexthandler.java:1086)     @ org.eclipse.jetty.servlet.servlethandler.doscope(servlethandler.java:428)     @ org.eclipse.jetty.server.session.sessionhandler.doscope(sessionhandler.java:193)     @ org.eclipse.jetty.server.handler.contexthandler.doscope(contexthandler.java:1020)     @ org.eclipse.jetty.server.handler.scopedhandler.handle(scopedhandler.java:135)     @ org.eclipse.jetty.server.handler.handlerwrapper.handle(handlerwrapper.java:116)     @ org.eclipse.jetty.server.server.handle(server.java:370)     @ org.eclipse.jetty.server.abstracthttpconnection.handlerequest(abstracthttpconnection.java:489)     @ org.eclipse.jetty.server.abstracthttpconnection.content(abstracthttpconnection.java:960)     @ org.eclipse.jetty.server.abstracthttpconnection$requesthandler.content(abstracthttpconnection.java:1021)     @ org.eclipse.jetty.http.httpparser.parsenext(httpparser.java:865)     @ org.eclipse.jetty.http.httpparser.parseavailable(httpparser.java:240)     @ org.eclipse.jetty.server.asynchttpconnection.handle(asynchttpconnection.java:82)     @ org.eclipse.jetty.io.nio.selectchannelendpoint.handle(selectchannelendpoint.java:668)     @ org.eclipse.jetty.io.nio.selectchannelendpoint$1.run(selectchannelendpoint.java:52)     @ winstone.boundedexecutorservice$1.run(boundedexecutorservice.java:77)     @ java.util.concurrent.threadpoolexecutor.runworker(unknown source)     @ java.util.concurrent.threadpoolexecutor$worker.run(unknown source)     @ java.lang.thread.run(unknown source) caused by: java.lang.nullpointerexception     @ org.jvnet.hudson.plugins.collapsingconsolesections.collapsingsectionsconfiguration.getsectiondefinitions(collapsingsectionsconfiguration.java:56)     @ org.jvnet.hudson.plugins.collapsingconsolesections.collapsingsectionnote$descriptorimpl.getsectiondefinitions(collapsingsectionnote.java:103)     @ org.jvnet.hudson.plugins.collapsingconsolesections.collapsingsectionannotatorfactory.newinstance(collapsingsectionannotatorfactory.java:40)     @ hudson.console.consoleannotator._for(consoleannotator.java:143)     @ hudson.console.consoleannotator.initial(consoleannotator.java:133)     @ hudson.console.annotatedlargetext.createannotator(annotatedlargetext.java:137)     @ hudson.console.annotatedlargetext.writehtmlto(annotatedlargetext.java:167)     @ hudson.console.annotatedlargetext.writelogto(annotatedlargetext.java:143)     @ org.kohsuke.stapler.framework.io.largetext.doprogresstext(largetext.java:262)     @ hudson.console.annotatedlargetext.doprogressivehtml(annotatedlargetext.java:91)     @ sun.reflect.nativemethodaccessorimpl.invoke0(native method)     @ sun.reflect.nativemethodaccessorimpl.invoke(unknown source)     @ sun.reflect.delegatingmethodaccessorimpl.invoke(unknown source)     @ java.lang.reflect.method.invoke(unknown source)     @ org.kohsuke.stapler.function$instancefunction.invoke(function.java:298)     @ org.kohsuke.stapler.function.bindandinvoke(function.java:161)     @ org.kohsuke.stapler.function.bindandinvokeandserveresponse(function.java:96)     @ org.kohsuke.stapler.metaclass$1.dodispatch(metaclass.java:121)     @ org.kohsuke.stapler.namebaseddispatcher.dispatch(namebaseddispatcher.java:53)     @ org.kohsuke.stapler.stapler.tryinvoke(stapler.java:746)     ... 78 more 

i've removed offending plug-ins (emotional jenkins , green spot) in attempt fix problem, still errors.

the stack trace shows green balls still installed.

have followed instructions @ top?

1. please check [the jenkins] bug tracker see if similar problem has been reported.
2. if reported, please vote , put comment on let gauge impact of problem.
3. if think new issue, please file new issue.

in case, exception indicates trigged collapsing console sections plugin.