org.netbeans.modules.deadlock.detector.Detector$DeadlockDetectedException
   at org.openide.util.lookup.InheritanceTree.classToNode(InheritanceTree.java:470)
   at org.openide.util.lookup.InheritanceTree.searchClass(InheritanceTree.java:596)
   at org.openide.util.lookup.InheritanceTree.lookup(InheritanceTree.java:242)
   at org.openide.util.lookup.DelegatingStorage.lookup(DelegatingStorage.java:174)
   at org.openide.util.lookup.AbstractLookup.lookupItem(AbstractLookup.java:436)
   at org.openide.util.lookup.AbstractLookup.lookup(AbstractLookup.java:421)
   at org.openide.util.lookup.ProxyLookup.lookup(ProxyLookup.java:223)
   at org.netbeans.modules.masterfs.watcher.Watcher.ext(Watcher.java:91)
   at org.netbeans.modules.masterfs.watcher.Watcher.register(Watcher.java:111)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.BaseFileObj.addFileChangeListener(BaseFileObj.java:528)
   at org.netbeans.modules.versioning.core.api.VCSFileProxy.createFileProxy(VCSFileProxy.java:161)
   at org.netbeans.modules.versioning.core.VcsVisibilityQueryImplementation.isVisible(VcsVisibilityQueryImplementation.java:156)
   at org.netbeans.api.queries.VisibilityQuery.isVisible(VisibilityQuery.java:104)
   at org.netbeans.spi.java.project.support.ui.PackageView.findNonExcludedPackages(PackageView.java:203)
   at org.netbeans.spi.java.project.support.ui.PackageView.findNonExcludedPackages(PackageView.java:229)
   at org.netbeans.spi.java.project.support.ui.PackageView.findNonExcludedPackages(PackageView.java:229)
   at org.netbeans.spi.java.project.support.ui.PackageView.findNonExcludedPackages(PackageView.java:229)
   at org.netbeans.spi.java.project.support.ui.PackageView.findNonExcludedPackages(PackageView.java:229)
   at org.netbeans.spi.java.project.support.ui.PackageView.findNonExcludedPackages(PackageView.java:229)
   at org.netbeans.spi.java.project.support.ui.PackageView.findNonExcludedPackages(PackageView.java:229)
   at org.netbeans.spi.java.project.support.ui.PackageView.findNonExcludedPackages(PackageView.java:164)
   at org.netbeans.spi.java.project.support.ui.PackageViewChildren.findNonExcludedPackages(PackageViewChildren.java:290)
   at org.netbeans.spi.java.project.support.ui.PackageViewChildren.computeKeys(PackageViewChildren.java:282)
   at org.netbeans.spi.java.project.support.ui.PackageViewChildren.run(PackageViewChildren.java:227)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1432)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2042)