java.lang.IllegalArgumentException: Already listening to D:\dev\ide\cache-8.1-20150129-javase\nodejs
new listener   : org.netbeans.modules.javascript.nodejs.platform.NodeJsSupport$NodeSourcesListener@13c3fac0
holder listener: org.netbeans.modules.javascript.nodejs.platform.NodeJsSupport$NodeSourcesListener@13c3fac0
   at org.openide.filesystems.FileChangeImpl.addFileChangeListenerImpl(FileChangeImpl.java:237)
   at org.openide.filesystems.FileUtil.addFileChangeListener(FileUtil.java:298)
   at org.netbeans.modules.javascript.nodejs.platform.NodeJsSupport.projectOpened(NodeJsSupport.java:160)
   at org.netbeans.modules.javascript.nodejs.platform.NodeJsPlatformProvider.projectOpened(NodeJsPlatformProvider.java:141)
   at org.netbeans.modules.web.clientproject.api.platform.PlatformProvider.projectOpened(PlatformProvider.java:190)
   at org.netbeans.modules.web.clientproject.api.platform.PlatformProviders.projectOpened(PlatformProviders.java:152)
   at org.netbeans.modules.web.clientproject.ClientSideProject$OpenHookImpl.projectOpened(ClientSideProject.java:679)
   at org.netbeans.spi.project.ui.ProjectOpenedHook$1.projectOpened(ProjectOpenedHook.java:85)
   at org.netbeans.modules.project.ui.OpenProjectList.notifyOpened(OpenProjectList.java:1298)
   at org.netbeans.modules.project.ui.OpenProjectList.doOpenProject(OpenProjectList.java:1379)
   at org.netbeans.modules.project.ui.OpenProjectList.open(OpenProjectList.java:823)
   at org.netbeans.modules.project.ui.groups.Group.open(Group.java:616)
   at org.netbeans.modules.project.ui.groups.Group.setActiveGroup(Group.java:206)
   at org.netbeans.modules.project.ui.groups.ManageGroupsPanel$2$1.run(ManageGroupsPanel.java:103)
   at org.openide.util.RequestProcessor$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)