java.lang.SecurityException: sealing violation
   at org.netbeans.JarClassLoader.doLoadClass(JarClassLoader.java:265)
   at org.netbeans.ProxyClassLoader.selfLoadClass(ProxyClassLoader.java:259)
   at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:187)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
   at java.lang.ClassLoader.defineClass1(ClassLoader.java:0)
   at java.lang.ClassLoader.defineClass(ClassLoader.java:947)
   at org.netbeans.JarClassLoader.doLoadClass(JarClassLoader.java:311)
   at org.netbeans.ProxyClassLoader.selfLoadClass(ProxyClassLoader.java:259)
   at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:187)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
   at org.netbeans.modules.editor.java.JavaKit.install(JavaKit.java:289)
   at javax.swing.JEditorPane.setEditorKit(JEditorPane.java:1055)
   at org.netbeans.modules.java.editor.JavaEditorWarmUpTask.run(JavaEditorWarmUpTask.java:213)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:759)
   at java.awt.EventQueue.access$500(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:712)
   at java.awt.EventQueue$3.run(EventQueue.java:706)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:77)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:729)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:199)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:117)
   at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:190)
   at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:235)
   at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:233)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:233)
   at java.awt.Dialog.show(Dialog.java:1070)
   at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:1086)
   at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:1136)
   at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:1108)
   at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:131)
   at org.netbeans.modules.openide.util.NbMutexEventProvider$Event.doEventAccess(NbMutexEventProvider.java:138)
   at org.netbeans.modules.openide.util.NbMutexEventProvider$Event.readAccess(NbMutexEventProvider.java:98)
   at org.netbeans.modules.openide.util.LazyMutexImplementation.readAccess(LazyMutexImplementation.java:94)
   at org.openide.util.Mutex.readAccess(Mutex.java:218)
   at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:1093)
   at java.awt.Component.show(Component.java:1668)
   at java.awt.Component.setVisible(Component.java:1615)
   at java.awt.Window.setVisible(Window.java:1013)
   at java.awt.Dialog.setVisible(Dialog.java:1005)
   at org.netbeans.core.NotifyExcPanel.updateState(NotifyExcPanel.java:430)
   at org.netbeans.core.NotifyExcPanel.access$300(NotifyExcPanel.java:106)
   at org.netbeans.core.NotifyExcPanel$2.run(NotifyExcPanel.java:359)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:759)
   at java.awt.EventQueue.access$500(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:712)
   at java.awt.EventQueue$3.run(EventQueue.java:706)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:77)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:729)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:199)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:117)
   at java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:190)
   at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:235)
   at java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:233)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:233)
   at java.awt.Dialog.show(Dialog.java:1070)
   at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:1086)
   at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:1136)
   at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:1108)
   at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:131)
   at org.netbeans.modules.openide.util.NbMutexEventProvider$Event.doEventAccess(NbMutexEventProvider.java:138)
   at org.netbeans.modules.openide.util.NbMutexEventProvider$Event.readAccess(NbMutexEventProvider.java:98)
   at org.netbeans.modules.openide.util.LazyMutexImplementation.readAccess(LazyMutexImplementation.java:94)
   at org.openide.util.Mutex.readAccess(Mutex.java:218)
   at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:1093)
   at java.awt.Component.show(Component.java:1668)
   at java.awt.Component.setVisible(Component.java:1615)
   at java.awt.Window.setVisible(Window.java:1013)
   at java.awt.Dialog.setVisible(Dialog.java:1005)
   at org.netbeans.core.windows.services.DialogDisplayerImpl$1AWTQuery.showDialog(DialogDisplayerImpl.java:266)
   at org.netbeans.core.windows.services.DialogDisplayerImpl$1AWTQuery.run(DialogDisplayerImpl.java:192)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:759)
   at java.awt.EventQueue.access$500(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:712)
   at java.awt.EventQueue$3.run(EventQueue.java:706)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:77)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:729)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:199)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:90)