java.lang.NullPointerException
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FolderObj.getFileObject(FolderObj.java:126)
   at org.netbeans.modules.project.ant.AntBasedProjectFactorySingleton.loadProject(AntBasedProjectFactorySingleton.java:229)
   at org.netbeans.api.project.ProjectManager.createProject(ProjectManager.java:365)
   at org.netbeans.api.project.ProjectManager.access$300(ProjectManager.java:85)
   at org.netbeans.api.project.ProjectManager$2.run(ProjectManager.java:286)
   at org.netbeans.api.project.ProjectManager$2.run(ProjectManager.java:233)
   at org.openide.util.Mutex.readAccess(Mutex.java:330)
   at org.netbeans.api.project.ProjectManager.findProject(ProjectManager.java:233)
   at org.netbeans.modules.projectapi.SimpleFileOwnerQueryImplementation.getOwner(SimpleFileOwnerQueryImplementation.java:127)
   at org.netbeans.api.project.FileOwnerQuery.getOwner(FileOwnerQuery.java:104)
   at org.netbeans.modules.csl.core.ProjectClassPathProvider.findClassPath(ProjectClassPathProvider.java:66)
   at org.netbeans.api.java.classpath.ClassPath.getClassPath(ClassPath.java:627)
   at org.netbeans.modules.parsing.impl.indexing.errors.Utilities.getSourceClassPathFor(Utilities.java:66)
   at org.netbeans.modules.parsing.impl.indexing.errors.TaskCache.computePersistentFile(TaskCache.java:431)
   at org.netbeans.modules.parsing.impl.indexing.errors.TaskCache.getErrors(TaskCache.java:136)
   at org.netbeans.modules.parsing.impl.indexing.errors.TaskCache.isInError(TaskCache.java:356)
   at org.netbeans.modules.parsing.impl.indexing.errors.ErrorAnnotator$1.run(ErrorAnnotator.java:313)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1411)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1991)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.NullPointerException
   at org.openide.util.RequestProcessor$Task.schedule(RequestProcessor.java:1452)
   at org.netbeans.modules.parsing.impl.indexing.errors.ErrorAnnotator.enqueue(ErrorAnnotator.java:257)
   at org.netbeans.modules.parsing.impl.indexing.errors.ErrorAnnotator.isInError(ErrorAnnotator.java:281)
   at org.netbeans.modules.parsing.impl.indexing.errors.ErrorAnnotator.annotateIcon(ErrorAnnotator.java:132)
   at org.netbeans.modules.masterfs.filebasedfs.FileBasedFileSystem$StatusImpl.annotateIcon(FileBasedFileSystem.java:349)
   at org.openide.loaders.DataNode.getIcon(DataNode.java:254)
   at org.openide.nodes.FilterNode.getIcon(FilterNode.java:569)
   at org.openide.explorer.view.VisualizerNode.getIcon(VisualizerNode.java:559)
   at org.openide.explorer.view.NodeRenderer.configureFrom(NodeRenderer.java:215)
   at org.openide.explorer.view.NodeRenderer.getTreeCellRendererComponent(NodeRenderer.java:147)
   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:286)
   at org.openide.explorer.view.VisualizerNode.run(VisualizerNode.java:461)
   at org.openide.util.Mutex.readAccess(Mutex.java:365)
   at org.openide.util.Mutex$1R.run(Mutex.java:1307)
   at org.openide.nodes.Children$ProjectManagerDeadlockDetector.execute(Children.java:1920)
   at org.openide.util.Mutex.doWrapperAccess(Mutex.java:1326)
   at org.openide.util.Mutex.readAccess(Mutex.java:354)
   at org.openide.explorer.view.VisualizerNode$QP.run(VisualizerNode.java:682)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:641)
   at java.awt.EventQueue.access$000(EventQueue.java:84)
   at java.awt.EventQueue$1.run(EventQueue.java:602)
   at java.awt.EventQueue$1.run(EventQueue.java:600)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:611)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:158)
   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)