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java.lang.NullPointerException: 	at oracle.jdeveloper.model.ApplicationContent.getInstance(ApplicationContent.java:62)	at oracle.adfmf.common.util.McAppUtils.getApplicationAdfMetaInfUrl(McAppUtils.java:408)	at oracle.adfmf.common.util.McAppUtils.getApplicationXmlURL(McAppUtils.java:371)	at oracle.adfmf.common.util.McAppUtils.getApplicationControllerProject(McAppUtils.java:1984)	at oracle.adfmf.common.util.McAppUtils.getDefinedDataControls(McAppUtils.java:1854)	at oracle.adfmf.amx.util.AMXUtils.registerDataControls(AMXUtils.java:609)	at oracle.adfmf.amx.dt.editor.databinding.AMXXmlContextSetupHook.setup(AMXXmlContextSetupHook.java:69)	at oracle.bali.xml.model.XmlContext.deliverSetupEventHelper(XmlContext.java:1391)	at oracle.bali.xml.model.XmlContext.deliverSetupEventAtXmlContextCreation(XmlContext.java:1342)	at oracle.bali.xml.gui.jdev.JDevXmlContext.deliverSetupEventAtXmlContextCreation(JDevXmlContext.java:834)	at oracle.bali.xml.model.XmlContext._initializeModel(XmlContext.java:326)	at oracle.bali.xml.model.XmlContext._setSourceModel(XmlContext.java:2328)	at oracle.bali.xml.model.XmlContext.setModel(XmlContext.java:346)	at oracle.bali.xml.addin.XMLSourceNode._createAndInitXmlContext(XMLSourceNode.java:1782)	at oracle.bali.xml.addin.XMLSourceNode._getXmlContext(XMLSourceNode.java:1732)	at oracle.bali.xml.addin.XMLSourceNode.getXmlContext(XMLSourceNode.java:192)	at oracle.adfmf.common.util.McAppUtils.getXmlModelFromXmlSourceNode(McAppUtils.java:877)	at oracle.adfmf.amx.dt.editor.PreviewEditor.resolveCellFormatHeight(PreviewEditor.java:790)	at oracle.adfmf.amx.dt.editor.PreviewEditor.updateAMXToStage(PreviewEditor.java:509)	at oracle.adfmf.amx.dt.editor.PreviewEditor.editorShown(PreviewEditor.java:280)	at com.oracle.jdeveloper.nbwindowsystem.editor.SplitPane.riseEditorShown(SplitPane.java:1914)	at com.oracle.jdeveloper.nbwindowsystem.editor.SplitPane.doLayoutBottomTabs(SplitPane.java:757)	at com.oracle.jdeveloper.nbwindowsystem.editor.SplitPane.doLayout(SplitPane.java:615)	at com.oracle.jdeveloper.nbwindowsystem.NbEditorManager.whenCurrentEditorChanges(NbEditorManager.java:1612)	at com.oracle.jdeveloper.nbwindowsystem.editor.TabGroup.whenCurrentEditorChanges(TabGroup.java:1026)	at com.oracle.jdeveloper.nbwindowsystem.editor.TabGroup.whenCurrentEditorChanges(TabGroup.java:1021)	at com.oracle.jdeveloper.nbwindowsystem.editor.TabGroupState.whenCurrentEditorChanges(TabGroupState.java:811)	at com.oracle.jdeveloper.nbwindowsystem.editor.TabGroupState.setCurrentSplitPanePos(TabGroupState.java:192)	at com.oracle.jdeveloper.nbwindowsystem.editor.TabGroupState.activateEditor(TabGroupState.java:496)	at com.oracle.jdeveloper.nbwindowsystem.editor.TabGroup.activateEditor(TabGroup.java:464)	at com.oracle.jdeveloper.nbwindowsystem.NbEditorManager.focusEditor(NbEditorManager.java:1476)	at com.oracle.jdeveloper.nbwindowsystem.editor.SplitPane.whenEditorTabMousePressed(SplitPane.java:1523)	at com.oracle.jdeveloper.nbwindowsystem.editor.SplitPane.mousePressed(SplitPane.java:1511)	at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:280)	at java.awt.Component.processMouseEvent(Component.java:6502)	at javax.swing.JComponent.processMouseEvent(JComponent.java:3320)	at java.awt.Component.processEvent(Component.java:6270)	at java.awt.Container.processEvent(Container.java:2229)	at java.awt.Component.dispatchEventImpl(Component.java:4861)	at java.awt.Container.dispatchEventImpl(Container.java:2287)	at java.awt.Component.dispatchEvent(Component.java:4687)	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4489)	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)	at java.awt.Container.dispatchEventImpl(Container.java:2273)	at java.awt.Window.dispatchEventImpl(Window.java:2719)	at java.awt.Component.dispatchEvent(Component.java:4687)	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)	at java.awt.EventQueue.access$200(EventQueue.java:103)	at java.awt.EventQueue$3.run(EventQueue.java:694)	at java.awt.EventQueue$3.run(EventQueue.java:692)	at java.security.AccessController.doPrivileged(Native Method)	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)	at java.awt.EventQueue$4.run(EventQueue.java:708)	at java.awt.EventQueue$4.run(EventQueue.java:706)	at java.security.AccessController.doPrivileged(Native Method)	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)	at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)	at oracle.javatools.internal.ui.EventQueueWrapper._dispatchEvent(EventQueueWrapper.java:169)	at oracle.javatools.internal.ui.EventQueueWrapper.dispatchEvent(EventQueueWrapper.java:151)	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)