java.lang.ClassNotFoundException: org.netbeans.modules.bugtracking.util.MylynUtils
   at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
   at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
Caused: java.lang.ClassNotFoundException: org.netbeans.modules.bugtracking.util.MylynUtils starting from ModuleCL@cd43ce[org.netbeans.modules.bugzilla] with possible defining loaders [ModuleCL@fa5ff3[org.netbeans.modules.bugtracking]] and declared parents [ModuleCL@fe315d[org.netbeans.modules.keyring], ModuleCL@3aef16[org.netbeans.libs.bugtracking], ModuleCL@24de7d[org.netbeans.modules.projectapi], ModuleCL@1fc3c84[org.openide.windows], org.netbeans.MainImpl$BootClassLoader@789144, ModuleCL@11daa0e[org.openide.loaders], ModuleCL@903025[org.jdesktop.layout], ModuleCL@c7e8a7[org.openide.awt], ModuleCL@162522b[org.netbeans.modules.autoupdate.services], ModuleCL@113981b[org.netbeans.modules.options.api], ...8 more]
   at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:264)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
Caused: java.lang.NoClassDefFoundError: org/netbeans/modules/bugtracking/util/MylynUtils
   at org.netbeans.modules.bugzilla.repository.BugzillaRepository.createTaskRepository(BugzillaRepository.java:440)
   at org.netbeans.modules.bugzilla.repository.BugzillaRepository.<init>(BugzillaRepository.java:141)
   at org.netbeans.modules.bugzilla.repository.BugzillaRepository.<init>(BugzillaRepository.java:128)
   at org.netbeans.modules.bugzilla.repository.NBRepositorySupport.createRepositoryIntern(NBRepositorySupport.java:123)
   at org.netbeans.modules.bugzilla.repository.NBRepositorySupport.findNbRepository(NBRepositorySupport.java:113)
   at org.netbeans.modules.bugzilla.ReportNBIssueAction$1.run(ReportNBIssueAction.java:85)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1424)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1968)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.NoClassDefFoundError: org/netbeans/modules/bugtracking/util/MylynUtils
   at org.openide.util.RequestProcessor.post(RequestProcessor.java:425)
   at org.netbeans.modules.bugzilla.ReportNBIssueAction.actionPerformed(ReportNBIssueAction.java:82)
   at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
   at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
   at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
   at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
   at javax.swing.AbstractButton.doClick(AbstractButton.java:357)
   at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1223)
   at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1264)
   at java.awt.Component.processMouseEvent(Component.java:6267)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
   at java.awt.Component.processEvent(Component.java:6032)
   at java.awt.Container.processEvent(Container.java:2041)
   at java.awt.Component.dispatchEventImpl(Component.java:4630)
   at java.awt.Container.dispatchEventImpl(Container.java:2099)
   at java.awt.Component.dispatchEvent(Component.java:4460)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4577)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4238)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4168)
   at java.awt.Container.dispatchEventImpl(Container.java:2085)
   at java.awt.Window.dispatchEventImpl(Window.java:2478)
   at java.awt.Component.dispatchEvent(Component.java:4460)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:138)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)