java.lang.NullPointerException
   at org.netbeans.modules.remote.impl.fs.server.FSSTransport.refreshFast(FSSTransport.java:501)
   at org.netbeans.modules.remote.impl.fs.RemoteFileSystemTransport.refreshFast(RemoteFileSystemTransport.java:95)
   at org.netbeans.modules.remote.impl.fileoperations.spi.RemoteVcsSupportUtil.refreshFor(RemoteVcsSupportUtil.java:390)
   at org.netbeans.modules.remotefs.versioning.impl.RemoteVcsSupportImpl.refreshFor(RemoteVcsSupportImpl.java:467)
   at org.netbeans.modules.remotefs.versioning.api.RemoteVcsSupport.refreshFor(RemoteVcsSupport.java:220)
   at org.netbeans.modules.remotefs.versioning.api.RemoteVcsSupport.refreshFor(RemoteVcsSupport.java:215)
   at org.netbeans.modules.mercurial.remote.util.HgCommand.execEnv(HgCommand.java:4020)
   at org.netbeans.modules.mercurial.remote.util.HgCommand.execForVersionCheck(HgCommand.java:4324)
   at org.netbeans.modules.mercurial.remote.util.HgCommand.getHgVersion(HgCommand.java:730)
   at org.netbeans.modules.mercurial.remote.Mercurial.checkVersionIntern(Mercurial.java:242)
   at org.netbeans.modules.mercurial.remote.Mercurial.access$100(Mercurial.java:83)
   at org.netbeans.modules.mercurial.remote.Mercurial$2.run(Mercurial.java:220)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1425)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:59)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:294)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2038)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.NullPointerException
   at org.openide.util.RequestProcessor.post(RequestProcessor.java:420)
   at org.netbeans.modules.mercurial.remote.Mercurial.asyncInit(Mercurial.java:225)
   at org.netbeans.modules.mercurial.remote.Mercurial.init(Mercurial.java:190)
   at org.netbeans.modules.mercurial.remote.Mercurial.getInstance(Mercurial.java:135)
   at org.netbeans.modules.mercurial.remote.MercurialVCS.<init>(MercurialVCS.java:77)
   at sun.reflect.NativeConstructorAccessorImpl.newInstance0(NativeConstructorAccessorImpl.java:0)
   at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
   at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
   at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
   at org.netbeans.core.startup.layers.BinaryFS$AttrImpl.getValue(BinaryFS.java:712)
   at org.netbeans.core.startup.layers.BinaryFS$BFSBase.getAttribute(BinaryFS.java:549)
   at org.openide.filesystems.MultiFileObject.getAttribute(MultiFileObject.java:944)
   at org.openide.filesystems.MultiFileObject.getAttribute(MultiFileObject.java:877)
   at org.openide.filesystems.MultiFileObject.getAttribute(MultiFileObject.java:940)
   at org.openide.filesystems.MultiFileObject.getAttribute(MultiFileObject.java:877)
   at org.openide.filesystems.MultiFileObject.getAttribute(MultiFileObject.java:798)
   at org.netbeans.core.startup.layers.BinaryFS$FileMap.get(BinaryFS.java:1128)
   at org.netbeans.modules.versioning.core.DelegatingVCS.getDelegate(DelegatingVCS.java:138)
   at org.netbeans.modules.versioning.core.DelegatingVCS.getVCSAnnotator(DelegatingVCS.java:239)
   at org.netbeans.modules.versioning.core.VersioningMainMenu.constructMenu(VersioningMainMenu.java:196)
   at org.netbeans.modules.versioning.core.VersioningMainMenu.access$000(VersioningMainMenu.java:69)
   at org.netbeans.modules.versioning.core.VersioningMainMenu$1.menuSelected(VersioningMainMenu.java:180)
   at javax.swing.JMenu.fireMenuSelected(JMenu.java:1037)
   at javax.swing.JMenu$MenuChangeListener.stateChanged(JMenu.java:1117)
   at javax.swing.DefaultButtonModel.fireStateChanged(DefaultButtonModel.java:349)
   at javax.swing.DefaultButtonModel.setSelected(DefaultButtonModel.java:232)
   at javax.swing.JMenu.setSelected(JMenu.java:305)
   at javax.swing.JMenu.menuSelectionChanged(JMenu.java:1186)
   at javax.swing.MenuSelectionManager.setSelectedPath(MenuSelectionManager.java:125)
   at javax.swing.plaf.basic.BasicMenuUI$Handler.mouseEntered(BasicMenuUI.java:511)
   at java.awt.Component.processMouseEvent(Component.java:6534)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
   at java.awt.Component.processEvent(Component.java:6290)
   at java.awt.Container.processEvent(Container.java:2234)
   at java.awt.Component.dispatchEventImpl(Component.java:4881)
   at java.awt.Container.dispatchEventImpl(Container.java:2292)
   at java.awt.Component.dispatchEvent(Component.java:4703)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4898)
   at java.awt.LightweightDispatcher.retargetMouseEnterExit(LightweightDispatcher.java:4686)
   at java.awt.LightweightDispatcher.trackMouseEnterExit(LightweightDispatcher.java:4665)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4514)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4462)
   at java.awt.Container.dispatchEventImpl(Container.java:2278)
   at java.awt.Window.dispatchEventImpl(Window.java:2739)
   at java.awt.Component.dispatchEvent(Component.java:4703)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:751)
   at java.awt.EventQueue.access$500(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:702)
   at java.awt.EventQueue$3.run(EventQueue.java:696)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:86)
   at java.awt.EventQueue$4.run(EventQueue.java:724)
   at java.awt.EventQueue$4.run(EventQueue.java:722)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:721)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)