java.lang.OutOfMemoryError: GC overhead limit exceeded
   at java.io.File.getParentFile(File.java:501)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileInfo.getRoot(FileInfo.java:190)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObjectFactory.getInstance(FileObjectFactory.java:124)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObjectFactory.getInstance(FileObjectFactory.java:119)
   at org.netbeans.modules.masterfs.filebasedfs.FileBasedFileSystem.getFileObject(FileBasedFileSystem.java:135)
   at org.netbeans.modules.masterfs.filebasedfs.FileBasedURLMapper.getFileObjects(FileBasedURLMapper.java:107)
   at org.netbeans.modules.masterfs.MasterURLMapper.getFileObjects(MasterURLMapper.java:65)
   at org.openide.filesystems.URLMapper.findFileObject(URLMapper.java:213)
   at org.netbeans.modules.project.ui.LazyProject.getProjectDirectory(LazyProject.java:93)
   at org.netbeans.modules.project.ui.ProjectTab$2.run(ProjectTab.java:584)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)