org.eclipse.core.runtime.CoreException: Cannot deserialize tasklist
   at org.netbeans.modules.mylyn.util.MylynSupport.ensureTaskListLoaded(MylynSupport.java:576)
   at org.netbeans.modules.mylyn.util.MylynSupport.getRepositoryQueries(MylynSupport.java:298)
   at org.netbeans.modules.mylyn.util.MylynSupport.getRepositoryQuery(MylynSupport.java:319)
   at org.netbeans.modules.bugzilla.repository.BugzillaRepository.createPersistentQuery(BugzillaRepository.java:266)
   at org.netbeans.modules.bugzilla.BugzillaConfig.getQuery(BugzillaConfig.java:135)
   at org.netbeans.modules.bugzilla.repository.BugzillaRepository.getQueriesIntern(BugzillaRepository.java:473)
   at org.netbeans.modules.bugzilla.repository.BugzillaRepository.getQueries(BugzillaRepository.java:423)
   at org.netbeans.modules.bugzilla.BugzillaRepositoryProvider.getQueries(BugzillaRepositoryProvider.java:90)
   at org.netbeans.modules.bugzilla.BugzillaRepositoryProvider.getQueries(BugzillaRepositoryProvider.java:56)
   at org.netbeans.modules.bugtracking.RepositoryImpl.getQueries(RepositoryImpl.java:289)
   at org.netbeans.modules.bugtracking.tasks.dashboard.RepositoryNode.getQueries(RepositoryNode.java:352)
   at org.netbeans.modules.bugtracking.tasks.dashboard.RepositoryNode.load(RepositoryNode.java:115)
   at org.netbeans.modules.bugtracking.tasks.dashboard.RepositoryNode.load(RepositoryNode.java:77)
   at org.netbeans.modules.team.commons.treelist.AsynchronousNode$Loader$1.run(AsynchronousNode.java:317)
   at java.lang.Thread.run(Thread.java:744)