java.lang.IllegalArgumentException: Null values are not allowed.
        at org.netbeans.api.java.source.WorkingCopy.rewrite(WorkingCopy.java:175)
        at org.netbeans.modules.visualweb.insync.java.Method.removeCleanupStatements(Method.java:227)
        at org.netbeans.modules.visualweb.insync.java.JavaClass$7.run(JavaClass.java:339)
        at org.netbeans.modules.visualweb.insync.java.WriteTaskWrapper.run(WriteTaskWrapper.java:75)
        at org.netbeans.modules.visualweb.insync.java.WriteTaskWrapper.run(WriteTaskWrapper.java:58)
        at org.netbeans.api.java.source.JavaSource.runModificationTask(JavaSource.java:953)
        at org.netbeans.modules.visualweb.insync.java.WriteTaskWrapper.execute(WriteTaskWrapper.java:92)
        at org.netbeans.modules.visualweb.insync.java.WriteTaskWrapper.execute(WriteTaskWrapper.java:80)
        at org.netbeans.modules.visualweb.insync.java.JavaClass.removeBeans(JavaClass.java:321)
        at org.netbeans.modules.visualweb.insync.beans.BeansUnit.flush(BeansUnit.java:308)
        at org.netbeans.modules.visualweb.insync.beans.BeansUnit.writeUnlock(BeansUnit.java:296)
        at org.netbeans.modules.visualweb.insync.faces.FacesPageUnit.writeUnlock(FacesPageUnit.java:184)
        at org.netbeans.modules.visualweb.insync.live.LiveUnit.writeUnlock(LiveUnit.java:493)
        at org.netbeans.modules.visualweb.insync.live.LiveUnitWrapper.writeUnlock(LiveUnitWrapper.java:169)
        at org.netbeans.modules.visualweb.insync.models.FacesModel.writeUnlock(FacesModel.java:1025)
        at org.netbeans.modules.visualweb.insync.action.AbstractDisplayActionAction.invokeDisplayAction(AbstractDisplayActionAction.java:148)
        at org.netbeans.modules.visualweb.insync.action.AbstractDisplayActionAction.access$200(AbstractDisplayActionAction.java:94)
        at org.netbeans.modules.visualweb.insync.action.AbstractDisplayActionAction$SingleDisplayActionAction.actionPerformed(AbstractDisplayActionAction.java:272)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1882)
        at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2202)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
        at javax.swing.AbstractButton.doClick(AbstractButton.java:334)
        at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1051)
        at apple.laf.CUIAquaMenuItem.doClick(CUIAquaMenuItem.java:119)
        at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1092)
        at java.awt.Component.processMouseEvent(Component.java:5602)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3135)
        at java.awt.Component.processEvent(Component.java:5367)
        at java.awt.Container.processEvent(Container.java:2010)
        at java.awt.Component.dispatchEventImpl(Component.java:4068)
        at java.awt.Container.dispatchEventImpl(Container.java:2068)
        at java.awt.Component.dispatchEvent(Component.java:3903)
        at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4256)
        at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:3936)
        at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:3866)
        at java.awt.Container.dispatchEventImpl(Container.java:2054)
        at java.awt.Window.dispatchEventImpl(Window.java:1801)
        at java.awt.Component.dispatchEvent(Component.java:3903)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:269)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:184)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:176)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)