java.lang.ClassNotFoundException: org.eclipse.core.runtime.OperationCanceledException
   at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
   at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
   at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
Caused: java.lang.ClassNotFoundException: org.eclipse.core.runtime.OperationCanceledException starting from ModuleCL@797afc4c[org.netbeans.modules.bugzilla] with possible defining loaders [ModuleCL@de7ba76[org.netbeans.modules.netbinox], Netigso[netigso://org.netbeans.modules.editor.completion], Netigso[netigso://org.netbeans.modules.j2eeserver], Netigso[netigso://org.netbeans.libs.smack], Netigso[netigso://org.netbeans.libs.jsr223], Netigso[reference:file:ide/modules/org-eclipse-core-contenttype.jar]] and declared parents [ModuleCL@12c19a96[org.netbeans.modules.spellchecker.apimodule], ModuleCL@5cba6e64[org.openide.dialogs], ModuleCL@28237a6d[org.netbeans.modules.mylyn.util], ModuleCL@2728d94a[org.openide.loaders], ModuleCL@12e57ce4[org.netbeans.modules.bugtracking], org.netbeans.MainImpl$BootClassLoader@7cd84586, Netigso[netigso://org.netbeans.libs.smack], ModuleCL@7f1f6110[org.netbeans.modules.bugtracking.commons], Netigso[reference:file:ide/modules/org-apache-commons-logging.jar], Netigso[netigso://org.netbeans.m
   at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:224)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
Caused: java.lang.NoClassDefFoundError: org/eclipse/core/runtime/OperationCanceledException
   at org.netbeans.modules.bugzilla.BugzillaConnector.createRepository(BugzillaConnector.java:84)
   at org.netbeans.modules.bugtracking.DelegatingConnector.createRepository(DelegatingConnector.java:131)
   at org.netbeans.modules.bugtracking.RepositoryRegistry.getStoredRepositories(RepositoryRegistry.java:277)
   at org.netbeans.modules.bugtracking.RepositoryRegistry.getRepositories(RepositoryRegistry.java:113)
   at org.netbeans.modules.bugtracking.RepositoryRegistry.getKnownRepositories(RepositoryRegistry.java:142)
   at org.netbeans.modules.bugtracking.RepositoryRegistry.getKnownRepositories(RepositoryRegistry.java:128)
   at org.netbeans.modules.bugtracking.util.IssueFinderUtils.getIssueFinders(IssueFinderUtils.java:62)
   at org.netbeans.modules.bugtracking.util.IssueFinderUtils.getIssueSpans(IssueFinderUtils.java:73)
   at org.netbeans.modules.bugtracking.api.Util.getIssueSpans(Util.java:247)
   at org.netbeans.modules.bugtracking.hyperlink.EditorHyperlinkProviderImpl.getIssueSpan(EditorHyperlinkProviderImpl.java:194)
   at org.netbeans.modules.bugtracking.hyperlink.EditorHyperlinkProviderImpl.isHyperlinkPoint(EditorHyperlinkProviderImpl.java:83)
   at org.netbeans.lib.editor.hyperlink.HyperlinkOperation.findProvider(HyperlinkOperation.java:291)
   at org.netbeans.lib.editor.hyperlink.HyperlinkOperation.performHyperlinking(HyperlinkOperation.java:249)
   at org.netbeans.lib.editor.hyperlink.HyperlinkOperation.keyPressed(HyperlinkOperation.java:407)
   at java.awt.AWTEventMulticaster.keyPressed(AWTEventMulticaster.java:249)
   at java.awt.AWTEventMulticaster.keyPressed(AWTEventMulticaster.java:249)
   at java.awt.AWTEventMulticaster.keyPressed(AWTEventMulticaster.java:249)
   at java.awt.AWTEventMulticaster.keyPressed(AWTEventMulticaster.java:249)
   at java.awt.Component.processKeyEvent(Component.java:6483)
   at javax.swing.JComponent.processKeyEvent(JComponent.java:2829)
   at java.awt.Component.processEvent(Component.java:6302)
   at java.awt.Container.processEvent(Container.java:2234)
   at java.awt.Component.dispatchEventImpl(Component.java:4881)
   at java.awt.Container.dispatchEventImpl(Container.java:2292)
   at java.awt.Component.dispatchEvent(Component.java:4703)
   at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1954)
   at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:806)
   at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1074)
   at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:945)
   at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:771)
   at java.awt.Component.dispatchEventImpl(Component.java:4752)
   at java.awt.Container.dispatchEventImpl(Container.java:2292)
   at java.awt.Window.dispatchEventImpl(Window.java:2739)
   at java.awt.Component.dispatchEvent(Component.java:4703)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:746)
   at java.awt.EventQueue.access$400(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:697)
   at java.awt.EventQueue$3.run(EventQueue.java:691)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86)
   at java.awt.EventQueue$4.run(EventQueue.java:719)
   at java.awt.EventQueue$4.run(EventQueue.java:717)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:716)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)