java.lang.ClassNotFoundException: org.eclipse.mylyn.internal.bugzilla.core.BugzillaRepositoryConnector
   at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
   at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
   at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
Caused: java.lang.ClassNotFoundException: org.eclipse.mylyn.internal.bugzilla.core.BugzillaRepositoryConnector starting from ModuleCL@ae8c15[org.netbeans.modules.bugzilla] with possible defining loaders [Netigso[reference:file:ide/modules/org-eclipse-mylyn-bugzilla-core.jar]] and declared parents [ModuleCL@1bda87e[org.netbeans.modules.spellchecker.apimodule], Netigso[reference:file:ide/modules/org-apache-commons-httpclient.jar], ModuleCL@14e2c2f[org.netbeans.modules.bugtracking], ModuleCL@1e2ca1e[org.openide.windows], ModuleCL@99cf34[org.netbeans.modules.options.api], Netigso[reference:file:ide/modules/org-eclipse-mylyn-commons-net.jar], ModuleCL@d67620[org.openide.nodes], ModuleCL@da6874[org.netbeans.modules.diff], ModuleCL@1103a97[org.openide.loaders], org.netbeans.MainImpl$BootClassLoader@46ee9d, ...11 more]
   at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:264)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
Caused: java.lang.NoClassDefFoundError: org/eclipse/mylyn/internal/bugzilla/core/BugzillaRepositoryConnector
   at org.netbeans.modules.bugzilla.Bugzilla.<init>(Bugzilla.java:83)
   at org.netbeans.modules.bugzilla.Bugzilla.getInstance(Bugzilla.java:97)
   at org.netbeans.modules.bugzilla.repository.BugzillaRepository.createTaskRepository(BugzillaRepository.java:436)
   at org.netbeans.modules.bugzilla.repository.BugzillaRepository.<init>(BugzillaRepository.java:145)
   at org.netbeans.modules.bugzilla.BugzillaConnector.createRepository(BugzillaConnector.java:82)
   at org.netbeans.modules.bugtracking.DelegatingConnector.createRepository(DelegatingConnector.java:123)
   at org.netbeans.modules.bugtracking.RepositoryRegistry.getStoredRepositories(RepositoryRegistry.java:259)
   at org.netbeans.modules.bugtracking.RepositoryRegistry.getRepositories(RepositoryRegistry.java:122)
   at org.netbeans.modules.bugtracking.api.RepositoryManager.getRepositories(RepositoryManager.java:124)
   at org.netbeans.modules.bugzilla.repository.NBRepositorySupport.getNBRepository(NBRepositorySupport.java:111)
   at org.netbeans.modules.bugzilla.api.NBBugzillaUtils.findNBRepository(NBBugzillaUtils.java:132)
   at org.netbeans.modules.bugzilla.BugzillaConnector.findNBRepository(BugzillaConnector.java:185)
   at org.netbeans.modules.bugtracking.kenai.spi.KenaiUtil.findNBRepository(KenaiUtil.java:284)
   at org.netbeans.modules.bugtracking.util.RepositoryComboSupport.pingNBRepository(RepositoryComboSupport.java:682)
   at org.netbeans.modules.bugtracking.util.RepositoryComboSupport.loadRepositories(RepositoryComboSupport.java:617)
   at org.netbeans.modules.bugtracking.util.RepositoryComboSupport.run(RepositoryComboSupport.java:392)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1452)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2032)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.NoClassDefFoundError: org/eclipse/mylyn/internal/bugzilla/core/BugzillaRepositoryConnector
   at org.openide.util.RequestProcessor.post(RequestProcessor.java:424)
   at org.netbeans.modules.bugtracking.util.RepositoryComboSupport.start(RepositoryComboSupport.java:254)
   at org.netbeans.modules.bugtracking.util.RepositoryComboSupport$DisplayabilityListener.hierarchyChanged(RepositoryComboSupport.java:316)
   at java.awt.Component.processHierarchyEvent(Component.java:6672)
   at java.awt.Component.processEvent(Component.java:6291)
   at java.awt.Container.processEvent(Container.java:2229)
   at java.awt.Component.dispatchEventImpl(Component.java:4861)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Component.dispatchEvent(Component.java:4687)
   at java.awt.Component.addNotify(Component.java:6941)
   at java.awt.Container.addNotify(Container.java:2758)
   at javax.swing.JComponent.addNotify(JComponent.java:4743)
   at org.netbeans.modules.bugtracking.vcs.HookPanel.addNotify(HookPanel.java:356)
   at java.awt.Container.addImpl(Container.java:1114)
   at org.netbeans.modules.versioning.util.PlaceholderPanel.addImpl(PlaceholderPanel.java:135)
   at java.awt.Container.add(Container.java:410)
   at org.netbeans.modules.mercurial.ui.commit.CommitPanel.initHooksPanel(CommitPanel.java:283)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:0)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:601)
   at org.netbeans.modules.mercurial.ui.commit.CommitPanel.invokeInitPanelMethod(CommitPanel.java:251)
   at org.netbeans.modules.mercurial.ui.commit.CommitPanel.displaySection(CommitPanel.java:239)
   at org.netbeans.modules.mercurial.ui.commit.CommitPanel.access$100(CommitPanel.java:128)
   at org.netbeans.modules.mercurial.ui.commit.CommitPanel$1.actionPerformed(CommitPanel.java:230)
   at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
   at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
   at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
   at javax.swing.JToggleButton$ToggleButtonModel.setPressed(JToggleButton.java:308)
   at javax.swing.plaf.basic.BasicButtonListener$Actions.actionPerformed(BasicButtonListener.java:303)
   at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1661)
   at javax.swing.JComponent.processKeyBinding(JComponent.java:2879)
   at javax.swing.KeyboardManager.fireBinding(KeyboardManager.java:306)
   at javax.swing.KeyboardManager.fireKeyboardAction(KeyboardManager.java:250)
   at javax.swing.JComponent.processKeyBindingsForAllComponents(JComponent.java:2971)
   at javax.swing.JComponent.processKeyBindings(JComponent.java:2963)
   at javax.swing.JComponent.processKeyEvent(JComponent.java:2842)
   at java.awt.Component.processEvent(Component.java:6282)
   at java.awt.Container.processEvent(Container.java:2229)
   at java.awt.Component.dispatchEventImpl(Component.java:4861)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Component.dispatchEvent(Component.java:4687)
   at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1893)
   at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:752)
   at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1017)
   at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:889)
   at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:717)
   at java.awt.Component.dispatchEventImpl(Component.java:4731)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Window.dispatchEventImpl(Window.java:2719)
   at java.awt.Component.dispatchEvent(Component.java:4687)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:703)
   at java.awt.EventQueue.access$000(EventQueue.java:102)
   at java.awt.EventQueue$3.run(EventQueue.java:662)
   at java.awt.EventQueue$3.run(EventQueue.java:660)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
   at java.awt.EventQueue$4.run(EventQueue.java:676)
   at java.awt.EventQueue$4.run(EventQueue.java:674)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:673)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:158)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:155)
   at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:182)
   at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:221)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:219)
   at java.awt.Dialog.show(Dialog.java:1072)
   at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:1072)
   at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:1107)
   at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:1094)
   at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:126)
   at org.openide.util.Mutex.doEventAccess(Mutex.java:1363)
   at org.openide.util.Mutex.readAccess(Mutex.java:273)
   at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:1079)
   at java.awt.Component.show(Component.java:1651)
   at java.awt.Component.setVisible(Component.java:1603)
   at java.awt.Window.setVisible(Window.java:1014)
   at java.awt.Dialog.setVisible(Dialog.java:1003)
   at org.netbeans.modules.mercurial.ui.commit.CommitAction.commit(CommitAction.java:258)
   at org.netbeans.modules.mercurial.ui.commit.CommitAction.commit(CommitAction.java:159)
   at org.netbeans.modules.mercurial.ui.commit.CommitAction.performContextAction(CommitAction.java:155)
   at org.netbeans.modules.mercurial.ui.actions.ContextAction.performAction(ContextAction.java:92)
   at org.openide.util.actions.NodeAction.performAction(NodeAction.java:295)
   at org.netbeans.modules.mercurial.ui.actions.ContextAction.performAction(ContextAction.java:118)
   at org.openide.util.actions.CallableSystemAction$1.run(CallableSystemAction.java:129)
   at org.openide.util.actions.ActionInvoker$1.run(ActionInvoker.java:95)
   at org.openide.util.actions.ActionInvoker.doPerformAction(ActionInvoker.java:116)
   at org.openide.util.actions.ActionInvoker.invokeAction(ActionInvoker.java:99)
   at org.openide.util.actions.CallableSystemAction.actionPerformed(CallableSystemAction.java:126)
   at org.openide.util.actions.NodeAction.actionPerformed(NodeAction.java:283)
   at org.netbeans.modules.mercurial.ui.actions.ContextAction.actionPerformed(ContextAction.java:112)
   at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
   at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
   at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
   at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
   at javax.swing.AbstractButton.doClick(AbstractButton.java:376)
   at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:833)
   at javax.swing.plaf.basic.BasicPopupMenuUI$Actions.doReturn(BasicPopupMenuUI.java:455)
   at javax.swing.plaf.basic.BasicPopupMenuUI$Actions.actionPerformed(BasicPopupMenuUI.java:429)
   at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1661)
   at javax.swing.JComponent.processKeyBinding(JComponent.java:2879)
   at javax.swing.KeyboardManager.fireBinding(KeyboardManager.java:306)
   at javax.swing.KeyboardManager.fireKeyboardAction(KeyboardManager.java:250)
   at javax.swing.JComponent.processKeyBindingsForAllComponents(JComponent.java:2971)
   at javax.swing.JComponent.processKeyBindings(JComponent.java:2963)
   at javax.swing.JComponent.processKeyEvent(JComponent.java:2842)
   at java.awt.Component.processEvent(Component.java:6282)
   at java.awt.Container.processEvent(Container.java:2229)
   at java.awt.Component.dispatchEventImpl(Component.java:4861)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Component.dispatchEvent(Component.java:4687)
   at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1893)
   at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:752)
   at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1017)
   at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:889)
   at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:717)
   at java.awt.Component.dispatchEventImpl(Component.java:4731)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Window.dispatchEventImpl(Window.java:2719)
   at java.awt.Component.dispatchEvent(Component.java:4687)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:703)
   at java.awt.EventQueue.access$000(EventQueue.java:102)
   at java.awt.EventQueue$3.run(EventQueue.java:662)
   at java.awt.EventQueue$3.run(EventQueue.java:660)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
   at java.awt.EventQueue$4.run(EventQueue.java:676)
   at java.awt.EventQueue$4.run(EventQueue.java:674)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:673)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:158)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)