java.lang.NullPointerException
        at org.netbeans.core.HtmlBrowserComponent.componentActivated(HtmlBrowserComponent.java:159)
Caused: java.lang.IllegalStateException: [Winsys] TopComponent org.netbeans.core.HtmlBrowserComponent throws runtime exception from its componentActivated() method.
Please repair it! Probable cause is at org.netbeans.core.HtmlBrowserComponent.componentActivated(HtmlBrowserComponent.java:159)
        at org.openide.windows.WindowManager.logThrowable(WindowManager.java:363)
        at org.openide.windows.WindowManager.activateComponent(WindowManager.java:286)
        at org.netbeans.core.windows.WindowManagerImpl.notifyRegistryTopComponentActivated(WindowManagerImpl.java:1029)
        at org.netbeans.core.windows.Central.activateModeTopComponent(Central.java:1758)
        at org.netbeans.core.windows.WindowManagerImpl.topComponentRequestActive(WindowManagerImpl.java:1180)
        at org.openide.windows.TopComponent.requestActive(TopComponent.java:789)
        at org.netbeans.core.NbTopManager$NbBrowser.showUrl(NbTopManager.java:646)
        at org.netbeans.core.NbTopManager$NbBrowser.access$100(NbTopManager.java:587)
        at org.netbeans.core.NbTopManager$NbURLDisplayer$1.run(NbTopManager.java:234)
        at org.openide.util.Mutex.doEvent(Mutex.java:1335)
        at org.openide.util.Mutex.readAccess(Mutex.java:345)
        at org.netbeans.core.NbTopManager$NbURLDisplayer.showURL(NbTopManager.java:229)
        at org.netbeans.modules.url.URLDataObject.open(URLDataObject.java:209)
        at org.netbeans.modules.welcome.ui.GetStarted$LinkAction.actionPerformed(GetStarted.java:204)
        at org.netbeans.modules.welcome.content.ActionButton.actionPerformed(ActionButton.java:74)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1995)
        at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2318)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
        at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236)
        at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:272)
        at java.awt.Component.processMouseEvent(Component.java:6263)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
        at java.awt.Component.processEvent(Component.java:6028)
        at java.awt.Container.processEvent(Container.java:2041)
        at java.awt.Component.dispatchEventImpl(Component.java:4630)
        at java.awt.Container.dispatchEventImpl(Container.java:2099)
        at java.awt.Component.dispatchEvent(Component.java:4460)
        at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4574)
        at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4238)
        at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4168)
        at java.awt.Container.dispatchEventImpl(Container.java:2085)
        at java.awt.Window.dispatchEventImpl(Window.java:2475)
        at java.awt.Component.dispatchEvent(Component.java:4460)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:117)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)