java.lang.ClassNotFoundException: org.netbeans.junit.NbModuleLogHandler
        at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
        at java.security.AccessController.doPrivileged(AccessController.java:0)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:268)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
Caused: java.lang.ClassNotFoundException: org.netbeans.junit.NbModuleLogHandler starting from SystemClassLoader[351 modules] with possible defining loaders [ModuleCL@87ad67[org.netbeans.modules.nbjunit]] and declared parents [ModuleCL@1388e5e[org.netbeans.modules.versioning], ModuleCL@ef22c9[org.netbeans.modules.profiler.j2se], ModuleCL@14fd55e[org.netbeans.modules.profiler.j2ee.weblogic], ModuleCL@1f7abae[org.netbeans.modules.localhistory], ModuleCL@15a2dc4[org.netbeans.modules.properties], ModuleCL@ac4d3b[org.netbeans.modules.xml.schema.completion], ModuleCL@17d7c7f[org.netbeans.lib.cvsclient], ModuleCL@1b0889a[org.netbeans.modules.editor.structure], ModuleCL@996b65[org.netbeans.modules.ide.branding], ModuleCL@fd899[org.netbeans.api.debugger.jpda], ...336 more]
        at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:259)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
        at java.lang.Class.forName0(Class.java:0)
        at java.lang.Class.forName(Class.java:242)
        at org.openide.util.lookup.MetaInfServicesLookup.search(MetaInfServicesLookup.java:266)
        at org.openide.util.lookup.MetaInfServicesLookup.beforeLookup(MetaInfServicesLookup.java:120)
        at org.openide.util.lookup.AbstractLookup$R.beforeLookup(AbstractLookup.java:1095)
        at org.openide.util.lookup.ProxyLookup$R.myBeforeLookup(ProxyLookup.java:653)
        at org.openide.util.lookup.ProxyLookup$R.computeResult(ProxyLookup.java:518)
        at org.openide.util.lookup.ProxyLookup$R.allInstances(ProxyLookup.java:489)
        at org.openide.util.lookup.ProxyLookup$R.collectFires(ProxyLookup.java:618)
        at org.openide.util.lookup.ProxyLookup.setLookups(ProxyLookup.java:163)
        at org.openide.util.lookup.ProxyLookup.setLookups(ProxyLookup.java:119)
        at org.netbeans.core.startup.MainLookup.moduleClassLoadersUp(MainLookup.java:118)
        at org.netbeans.core.startup.MainLookup.systemClassLoaderChanged(MainLookup.java:106)
        at org.netbeans.core.startup.NbInstaller.load(NbInstaller.java:301)
        at org.netbeans.ModuleManager.enable(ModuleManager.java:917)
        at org.netbeans.modules.autoupdate.services.OperationSupportImpl$ForEnable.enable(OperationSupportImpl.java:177)
        at org.netbeans.modules.autoupdate.services.OperationSupportImpl$ForEnable.access$1100(OperationSupportImpl.java:120)
        at org.netbeans.modules.autoupdate.services.OperationSupportImpl$ForEnable$1.run(OperationSupportImpl.java:151)
        at org.netbeans.modules.autoupdate.services.OperationSupportImpl$ForEnable$1.run(OperationSupportImpl.java:149)
        at org.openide.util.Mutex.writeAccess(Mutex.java:433)
        at org.netbeans.modules.autoupdate.services.OperationSupportImpl$ForEnable.doOperation(OperationSupportImpl.java:149)
        at org.netbeans.api.autoupdate.OperationSupport.doOperation(OperationSupport.java:67)
        at org.netbeans.modules.ide.ergonomics.fod.ModulesActivator.doEnableModules(ModulesActivator.java:148)
        at org.netbeans.modules.ide.ergonomics.fod.ModulesActivator.enableModules(ModulesActivator.java:113)
        at org.netbeans.modules.ide.ergonomics.fod.ModulesActivator.access$000(ModulesActivator.java:61)
        at org.netbeans.modules.ide.ergonomics.fod.ModulesActivator$1.run(ModulesActivator.java:106)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:573)
        at org.openide.util.RequestProcessor$Processor.doEvaluate(RequestProcessor.java:1050)
        at org.openide.util.RequestProcessor$Task.waitFinished(RequestProcessor.java:738)
        at org.netbeans.modules.ide.ergonomics.fod.ModulesInstaller.installModules(ModulesInstaller.java:120)
        at org.netbeans.modules.ide.ergonomics.fod.ConfigurationPanel$3.run(ConfigurationPanel.java:201)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:573)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1005)