java.lang.IllegalStateException: No instance data can be specified.
   at org.eclipse.core.internal.runtime.DataArea.assertLocationInitialized(DataArea.java:50)
   at org.eclipse.core.internal.runtime.DataArea.getStateLocation(DataArea.java:120)
   at org.eclipse.core.internal.runtime.InternalPlatform.getStateLocation(InternalPlatform.java:606)
   at org.eclipse.core.internal.runtime.InternalPlatform.getStateLocation(InternalPlatform.java:601)
   at org.eclipse.core.runtime.Platform.getStateLocation(Platform.java:1009)
   at org.eclipse.mylyn.internal.bugzilla.core.BugzillaCorePlugin.getConfigurationCachePath(BugzillaCorePlugin.java:66)
   at org.eclipse.mylyn.internal.bugzilla.core.BugzillaRepositoryConnector.<init>(BugzillaRepositoryConnector.java:147)
   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:109)
   at org.netbeans.modules.bugtracking.ui.nodes.BugtrackingRootNode$RootNodeChildren.createKeys(BugtrackingRootNode.java:152)
   at org.openide.nodes.AsynchChildren.run(AsynchChildren.java:206)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.IllegalStateException: No instance data can be specified.
   at org.openide.util.RequestProcessor$Task.schedule(RequestProcessor.java:1493)
   at org.openide.nodes.AsynchChildren.addNotify(AsynchChildren.java:89)
   at org.openide.nodes.Children.callAddNotify(Children.java:575)
   at org.openide.nodes.EntrySupport$Default.getArray(EntrySupport.java:770)
   at org.openide.nodes.EntrySupport$Default.getNodes(EntrySupport.java:172)
   at org.openide.nodes.EntrySupport$Default.getNodes(EntrySupport.java:228)
   at org.openide.nodes.Children.getNodes(Children.java:469)
   at org.openide.nodes.FilterNode$Children$DefaultSupport.updateKeys(FilterNode.java:1699)
   at org.openide.nodes.FilterNode$Children$DefaultSupport.update(FilterNode.java:1686)
   at org.openide.nodes.FilterNode$Children.addNotifyImpl(FilterNode.java:1477)
   at org.openide.nodes.FilterNode$Children.addNotify(FilterNode.java:1470)
   at org.openide.nodes.LazyNode$SwitchChildren.addNotify(LazyNode.java:108)
   at org.openide.nodes.Children.callAddNotify(Children.java:575)
   at org.openide.nodes.EntrySupport$Default.getArray(EntrySupport.java:770)
   at org.openide.nodes.EntrySupport$Default.getNodes(EntrySupport.java:172)
   at org.openide.nodes.EntrySupport$Default.getNodes(EntrySupport.java:228)
   at org.openide.nodes.Children.getNodes(Children.java:469)
   at org.openide.nodes.FilterNode$Children$DefaultSupport.updateKeys(FilterNode.java:1699)
   at org.openide.nodes.FilterNode$Children$DefaultSupport.update(FilterNode.java:1686)
   at org.openide.nodes.FilterNode$Children.addNotifyImpl(FilterNode.java:1477)
   at org.openide.nodes.FilterNode$Children.addNotify(FilterNode.java:1470)
   at org.openide.nodes.Children.callAddNotify(Children.java:575)
   at org.openide.nodes.EntrySupport$Default.getArray(EntrySupport.java:770)
   at org.openide.nodes.EntrySupport$Default.getNodes(EntrySupport.java:172)
   at org.openide.nodes.EntrySupport$Default.getNodes(EntrySupport.java:228)
   at org.openide.nodes.Children.getNodes(Children.java:469)
   at org.openide.nodes.FilterNode$Children$DefaultSupport.updateKeys(FilterNode.java:1699)
   at org.openide.nodes.FilterNode$Children$DefaultSupport.update(FilterNode.java:1686)
   at org.openide.nodes.FilterNode$Children.addNotifyImpl(FilterNode.java:1477)
   at org.openide.nodes.FilterNode$Children.addNotify(FilterNode.java:1470)
   at org.openide.nodes.Children.callAddNotify(Children.java:575)
   at org.openide.nodes.EntrySupport$Default.getArray(EntrySupport.java:770)
   at org.openide.nodes.EntrySupport$Default.getNodes(EntrySupport.java:172)
   at org.openide.nodes.EntrySupport$Default.getNodes(EntrySupport.java:228)
   at org.openide.nodes.Children.getNodes(Children.java:469)
   at org.openide.nodes.FilterNode$Children$DefaultSupport.updateKeys(FilterNode.java:1699)
   at org.openide.nodes.FilterNode$Children$DefaultSupport.update(FilterNode.java:1686)
   at org.openide.nodes.FilterNode$Children.addNotifyImpl(FilterNode.java:1477)
   at org.openide.nodes.FilterNode$Children.addNotify(FilterNode.java:1470)
   at org.openide.nodes.Children.callAddNotify(Children.java:575)
   at org.openide.nodes.EntrySupport$Default.getArray(EntrySupport.java:770)
   at org.openide.nodes.EntrySupport$Default.getNodes(EntrySupport.java:172)
   at org.openide.nodes.EntrySupport$Default.getNodes(EntrySupport.java:228)
   at org.openide.nodes.EntrySupport$Default.getNodesCount(EntrySupport.java:232)
   at org.openide.nodes.Children.getNodesCount(Children.java:509)
   at org.openide.nodes.Node$1.run(Node.java:530)
   at org.openide.util.Mutex.postRequest(Mutex.java:1269)
   at org.openide.util.Mutex.postRequest(Mutex.java:1215)
   at org.openide.util.Mutex.postWriteRequest(Mutex.java:587)
   at org.openide.nodes.Node.setChildren(Node.java:504)
   at org.openide.nodes.FilterNode.changeOriginal(FilterNode.java:448)
   at org.openide.loaders.FolderChildren$DelayedNode.run(FolderChildren.java:427)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1452)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2032)