java.lang.NullPointerException
   at org.netbeans.core.ui.options.general.GeneralOptionsPanel.updateWebBrowsers(GeneralOptionsPanel.java:716)
   at org.netbeans.core.ui.options.general.GeneralOptionsPanel.update(GeneralOptionsPanel.java:708)
   at org.netbeans.core.ui.options.general.GeneralOptionsPanelController.update(GeneralOptionsPanelController.java:74)
   at org.netbeans.modules.options.CategoryModel$Category.update(CategoryModel.java:392)
   at org.netbeans.modules.options.CategoryModel.update(CategoryModel.java:214)
   at org.netbeans.modules.options.OptionsPanel.update(OptionsPanel.java:294)
   at org.netbeans.modules.options.OptionsDisplayerImpl.showOptionsDialog(OptionsDisplayerImpl.java:226)
   at org.netbeans.api.options.OptionsDisplayer$3.run(OptionsDisplayer.java:248)
   at org.netbeans.api.options.OptionsDisplayer$3.run(OptionsDisplayer.java:234)
   at org.openide.util.Mutex.doEventAccess(Mutex.java:1376)
   at org.openide.util.Mutex.readAccess(Mutex.java:278)
   at org.netbeans.api.options.OptionsDisplayer.openImpl(OptionsDisplayer.java:234)
   at org.netbeans.api.options.OptionsDisplayer.open(OptionsDisplayer.java:181)
   at org.netbeans.api.options.OptionsDisplayer.open(OptionsDisplayer.java:134)
   at org.netbeans.modules.options.OptionsWindowAction.actionPerformed(OptionsWindowAction.java:64)
   at org.openide.awt.AlwaysEnabledAction$1.run(AlwaysEnabledAction.java:199)
   at org.openide.util.actions.ActionInvoker$1.run(ActionInvoker.java:95)
   at org.openide.util.actions.ActionInvoker.doPerformAction(ActionInvoker.java:116)
   at org.openide.util.actions.ActionInvoker.invokeAction(ActionInvoker.java:99)
   at org.openide.awt.AlwaysEnabledAction.actionPerformed(AlwaysEnabledAction.java:202)
   at org.netbeans.modules.applemenu.NbApplicationAdapter.performAction(NbApplicationAdapter.java:213)
   at org.netbeans.modules.applemenu.NbApplicationAdapter.handlePreferences(NbApplicationAdapter.java:191)
   at com.apple.eawt._AppEventLegacyHandler$2.dispatchEvent(_AppEventLegacyHandler.java:110)
   at com.apple.eawt._AppEventLegacyHandler.sendEventToEachListenerUntilHandled(_AppEventLegacyHandler.java:188)
   at com.apple.eawt._AppEventLegacyHandler.handlePreferences(_AppEventLegacyHandler.java:108)
   at com.apple.eawt._AppEventHandler$_PreferencesDispatcher.performUsing(_AppEventHandler.java:263)
   at com.apple.eawt._AppEventHandler$_PreferencesDispatcher.performUsing(_AppEventHandler.java:254)
   at com.apple.eawt._AppEventHandler$_AppEventDispatcher$1.run(_AppEventHandler.java:516)
   at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:312)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:745)
   at java.awt.EventQueue.access$300(EventQueue.java:103)
   at java.awt.EventQueue$3.run(EventQueue.java:706)
   at java.awt.EventQueue$3.run(EventQueue.java:704)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:715)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)