java.lang.NullPointerException
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.NullPointerException
   at org.openide.util.RequestProcessor$Task.schedule(RequestProcessor.java:694)
   at org.netbeans.modules.parsing.impl.indexing.errors.ErrorAnnotator.enqueue(ErrorAnnotator.java:250)
   at org.netbeans.modules.parsing.impl.indexing.errors.ErrorAnnotator.isInError(ErrorAnnotator.java:274)
   at org.netbeans.modules.parsing.impl.indexing.errors.ErrorAnnotator.annotateIcon(ErrorAnnotator.java:136)
   at org.netbeans.modules.masterfs.filebasedfs.FileBasedFileSystem$StatusImpl.annotateIcon(FileBasedFileSystem.java:308)
   at org.netbeans.modules.project.ui.ProjectsRootNode$BadgingNode.getIcon(ProjectsRootNode.java:763)
   at org.openide.explorer.view.VisualizerNode.getIcon(VisualizerNode.java:553)
   at org.openide.explorer.view.NodeRenderer.configureFrom(NodeRenderer.java:203)
   at org.openide.explorer.view.NodeRenderer.getTreeCellRendererComponent(NodeRenderer.java:141)
   at javax.swing.plaf.basic.BasicTreeUI$NodeDimensionsHandler.getNodeDimensions(BasicTreeUI.java:2712)
   at javax.swing.tree.AbstractLayoutCache.getNodeDimensions(AbstractLayoutCache.java:475)
   at javax.swing.tree.FixedHeightLayoutCache.getBounds(FixedHeightLayoutCache.java:535)
   at javax.swing.tree.FixedHeightLayoutCache.getBounds(FixedHeightLayoutCache.java:181)
   at javax.swing.plaf.basic.BasicTreeUI.getPathBounds(BasicTreeUI.java:510)
   at javax.swing.plaf.basic.BasicTreeUI.getPathBounds(BasicTreeUI.java:503)
   at javax.swing.plaf.basic.BasicTreeUI$Handler.treeNodesChanged(BasicTreeUI.java:3756)
   at javax.swing.tree.DefaultTreeModel.fireTreeNodesChanged(DefaultTreeModel.java:468)
   at javax.swing.tree.DefaultTreeModel.nodesChanged(DefaultTreeModel.java:330)
   at javax.swing.tree.DefaultTreeModel.nodeChanged(DefaultTreeModel.java:261)
   at org.openide.explorer.view.NodeTreeModel$Listener.update(NodeTreeModel.java:259)
   at org.openide.explorer.view.VisualizerNode.run(VisualizerNode.java:455)
   at org.openide.util.Mutex.readAccess(Mutex.java:362)
   at org.openide.util.Mutex$1R.run(Mutex.java:1301)
   at org.openide.nodes.Children$ProjectManagerDeadlockDetector.execute(Children.java:1812)
   at org.openide.util.Mutex.doWrapperAccess(Mutex.java:1320)
   at org.openide.util.Mutex.readAccess(Mutex.java:351)
   at org.openide.explorer.view.VisualizerNode$QP.run(VisualizerNode.java:676)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:130)
   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)