java.lang.ClassNotFoundException: org.openide.filesystems.FSException
        at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
        at java.security.AccessController.doPrivileged(AccessController.java:0)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
Caused: java.lang.ClassNotFoundException: org.openide.filesystems.FSException starting from org.netbeans.MainImpl$BootClassLoader@5d764be1 with possible defining loaders [org.netbeans.MainImpl$BootClassLoader@5d764be1] and declared parents []
        at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:259)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
Caused: java.lang.NoClassDefFoundError: org/openide/filesystems/FSException
        at org.openide.filesystems.JarFileSystem.setJarFile(JarFileSystem.java:285)
        at org.openide.filesystems.JarFileSystem.setJarFile(JarFileSystem.java:235)
        at org.netbeans.core.startup.layers.ArchiveURLMapper.getFileSystem(ArchiveURLMapper.java:175)
        at org.netbeans.core.startup.layers.ArchiveURLMapper.getFileObjects(ArchiveURLMapper.java:139)
        at org.openide.filesystems.URLMapper.findFileObject(URLMapper.java:213)
        at org.netbeans.api.java.classpath.ClassPath$Entry.getRoot(ClassPath.java:682)
        at org.netbeans.api.java.classpath.ClassPath.createRoots(ClassPath.java:271)
        at org.netbeans.api.java.classpath.ClassPath.getRoots(ClassPath.java:252)
        at org.netbeans.modules.debugger.jpda.projects.SourcePathProviderImpl$PathRegistryListener.pathsRemoved(SourcePathProviderImpl.java:1004)
Caused: java.lang.reflect.InvocationTargetException
        at sun.reflect.GeneratedMethodAccessor306.invoke(GeneratedMethodAccessor306.java:0)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.openide.util.WeakListenerImpl$ProxyListener.invoke(WeakListenerImpl.java:451)
Caused: java.lang.reflect.UndeclaredThrowableException
        at $Proxy5.pathsRemoved(.java:0)
        at org.netbeans.api.java.classpath.GlobalPathRegistry.unregister(GlobalPathRegistry.java:257)
        at org.netbeans.modules.apisupport.project.NbModuleProject$OpenedHook.projectClosed(NbModuleProject.java:658)
        at org.netbeans.spi.project.ui.ProjectOpenedHook$1.projectClosed(ProjectOpenedHook.java:84)
        at org.netbeans.spi.project.ui.support.UILookupMergerSupport$OpenHookImpl.projectClosed(UILookupMergerSupport.java:205)
        at org.netbeans.spi.project.ui.ProjectOpenedHook$1.projectClosed(ProjectOpenedHook.java:84)
        at org.netbeans.modules.project.ui.OpenProjectList.notifyClosed(OpenProjectList.java:1081)
        at org.netbeans.modules.project.ui.OpenProjectList.close(OpenProjectList.java:773)
        at org.netbeans.modules.project.ui.OpenProjectsTrampolineImpl.closeAPI(OpenProjectsTrampolineImpl.java:76)
        at org.netbeans.api.project.ui.OpenProjects.close(OpenProjects.java:221)
        at org.netbeans.modules.project.ui.groups.Group.open(Group.java:327)
        at org.netbeans.modules.project.ui.groups.Group.setActiveGroup(Group.java:166)
        at org.netbeans.modules.project.ui.groups.GroupsMenu$Menu$1$1.run(GroupsMenu.java:117)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:602)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1070)