java.lang.IllegalArgumentException: fileObject == null
	at org.netbeans.api.java.source.JavaSource.forFileObject(JavaSource.java:299)
	at org.netbeans.modules.j2ee.ejbcore.ui.logicalview.ejb.shared.EjbViewController.getBeanClass(EjbViewController.java:144)
	at org.netbeans.modules.j2ee.ejbcore.ui.logicalview.ejb.mdb.MessageNode.<init>(MessageNode.java:70)
	at org.netbeans.modules.j2ee.ejbcore.ui.logicalview.ejb.mdb.MessageNode.<init>(MessageNode.java:53)
	at org.netbeans.modules.j2ee.ejbcore.EjbNodesFactoryImpl.createMessageNode(EjbNodesFactoryImpl.java:52)
	at org.netbeans.modules.j2ee.ejbjar.project.ui.EjbContainerChildren.createNodes(EjbContainerChildren.java:131)
	at org.netbeans.modules.j2ee.ejbjar.project.ui.EjbContainerChildren.createNodes(EjbContainerChildren.java:49)
	at org.openide.nodes.Children$Keys$KE.nodes(Children.java:2166)
	at org.openide.nodes.ChildrenArray.nodesFor(ChildrenArray.java:145)
	at org.openide.nodes.Children$Info.nodes(Children.java:1218)
	at org.openide.nodes.Children.justComputeNodes(Children.java:698)
	at org.openide.nodes.ChildrenArray.nodes(ChildrenArray.java:74)
	at org.openide.nodes.Children.getNodes(Children.java:369)
	at org.openide.nodes.FilterNode$ChildrenAdapter.run(FilterNode.java:1479)
	at org.openide.nodes.FilterNode$Children.updateKeys(FilterNode.java:1433)
	at org.openide.nodes.FilterNode$Children.addNotifyImpl(FilterNode.java:1326)
	at org.openide.nodes.FilterNode$Children.addNotify(FilterNode.java:1318)
	at org.openide.nodes.Children.callAddNotify(Children.java:464)
	at org.openide.nodes.Children.getArray(Children.java:506)
	at org.openide.nodes.Children.getNodes(Children.java:362)
	at org.openide.explorer.view.VisualizerNode.getChildren(VisualizerNode.java:222)
	at org.openide.explorer.view.VisualizerNode.getChildCount(VisualizerNode.java:265)
	at javax.swing.tree.DefaultTreeModel.getChildCount(DefaultTreeModel.java:168)
	at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.expand(VariableHeightLayoutCache.java:1461)
	at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.expand(VariableHeightLayoutCache.java:1270)
	at javax.swing.tree.VariableHeightLayoutCache.ensurePathIsExpanded(VariableHeightLayoutCache.java:966)
	at javax.swing.tree.VariableHeightLayoutCache.setExpandedState(VariableHeightLayoutCache.java:164)
	at javax.swing.plaf.basic.BasicTreeUI.updateExpandedDescendants(BasicTreeUI.java:1556)
	at javax.swing.plaf.basic.BasicTreeUI$Handler.treeExpanded(BasicTreeUI.java:3645)
	at javax.swing.JTree.fireTreeExpanded(JTree.java:2235)
	at javax.swing.JTree.setExpandedState(JTree.java:3006)
	at javax.swing.JTree.expandPath(JTree.java:1742)
	at javax.swing.plaf.basic.BasicTreeUI.toggleExpandState(BasicTreeUI.java:2189)
	at javax.swing.plaf.basic.BasicTreeUI.handleExpandControlClick(BasicTreeUI.java:2176)
	at javax.swing.plaf.basic.BasicTreeUI.checkForClickInExpandControl(BasicTreeUI.java:2130)
	at javax.swing.plaf.basic.BasicTreeUI$Handler.handleSelectionImpl(BasicTreeUI.java:3495)
	at javax.swing.plaf.basic.BasicTreeUI$Handler.handleSelection(BasicTreeUI.java:3480)
	at javax.swing.plaf.basic.BasicTreeUI$Handler.mousePressed(BasicTreeUI.java:3461)
	at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:222)
	at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:221)
	at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:221)
	at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:221)
	at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:221)
	at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:221)
	at java.awt.Component.processMouseEvent(Component.java:5485)
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3126)
	at java.awt.Component.processEvent(Component.java:5253)
	at java.awt.Container.processEvent(Container.java:1966)
	at java.awt.Component.dispatchEventImpl(Component.java:3955)
	at java.awt.Container.dispatchEventImpl(Container.java:2024)
	at java.awt.Component.dispatchEvent(Component.java:3803)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3889)
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
	at java.awt.Container.dispatchEventImpl(Container.java:2010)
	at java.awt.Window.dispatchEventImpl(Window.java:1774)
	at java.awt.Component.dispatchEvent(Component.java:3803)
[catch] at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)