java.lang.NullPointerException
	at org.netbeans.modules.java.project.SourceContainer.create(SourceContainer.java:100)
	at org.netbeans.modules.java.project.JavaProjectImpl.createJavaSources(JavaProjectImpl.java:196)
	at org.netbeans.modules.java.sources.SourcesPanel.handleAdd(SourcesPanel.java:393)
	at org.netbeans.modules.java.sources.SourcesPanel.newButtonActionPerformed(SourcesPanel.java:289)
	at org.netbeans.modules.java.sources.SourcesPanel.access$100(SourcesPanel.java:42)
	at org.netbeans.modules.java.sources.SourcesPanel$1.actionPerformed(SourcesPanel.java:156)
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1786)
	at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1839)
	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:245)
	at java.awt.Component.processMouseEvent(Component.java:5100)
	at java.awt.Component.processEvent(Component.java:4897)
	at java.awt.Container.processEvent(Container.java:1569)
	at java.awt.Component.dispatchEventImpl(Component.java:3615)
	at java.awt.Container.dispatchEventImpl(Container.java:1627)
	at java.awt.Component.dispatchEvent(Component.java:3477)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3483)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3198)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3128)
	at java.awt.Container.dispatchEventImpl(Container.java:1613)
	at java.awt.Window.dispatchEventImpl(Window.java:1606)
	at java.awt.Component.dispatchEvent(Component.java:3477)
[catch] at java.awt.EventQueue.dispatchEvent(EventQueue.java:456)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:141)
	at java.awt.Dialog$1.run(Dialog.java:540)
	at java.awt.Dialog.show(Dialog.java:561)
	at org.netbeans.core.windows.NbPresenter.superShow(NbPresenter.java:688)
	at org.netbeans.core.windows.NbPresenter.doShow(NbPresenter.java:731)
	at org.netbeans.core.windows.NbPresenter.run(NbPresenter.java:719)
	at org.openide.util.Mutex$1.run(Mutex.java:952)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:171)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:454)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)