java.lang.IllegalArgumentException: An explored context (jScrollPane1 [JScrollPane]) must be within the root context (Form NewJFrame7).
	at org.openide.explorer.ExplorerManager.checkUnderRoot(ExplorerManager.java:488)
	at org.openide.explorer.ExplorerManager.access$300(ExplorerManager.java:52)
	at org.openide.explorer.ExplorerManager$1SetExploredContextAndSelection.run(ExplorerManager.java:333)
	at org.openide.util.Mutex.readAccess(Mutex.java:261)
	at org.openide.explorer.ExplorerManager.setExploredContextAndSelection(ExplorerManager.java:347)
	at org.openide.explorer.view.BeanTreeView.selectionChanged(BeanTreeView.java:97)
	at org.openide.explorer.view.TreeView.callSelectionChanged(TreeView.java:702)
	at org.openide.explorer.view.TreeView$TreePropertyListener.run(TreeView.java:1233)
	at org.openide.util.Mutex.leave(Mutex.java:762)
	at org.openide.util.Mutex.postRequest(Mutex.java:1089)
	at org.openide.util.Mutex.postWriteRequest(Mutex.java:457)
	at org.openide.nodes.Children$Keys.applyKeys(Children.java:2026)
	at org.openide.nodes.Children$Keys.setKeys(Children.java:1984)
	at org.netbeans.modules.form.RADComponentNode$RADChildren.updateKeys(RADComponentNode.java:570)
	at org.netbeans.modules.form.FormNode.updateChildren(FormNode.java:125)
	at org.netbeans.modules.form.FormEditor.updateNodeChildren(FormEditor.java:626)
	at org.netbeans.modules.form.FormEditor$5.formChanged(FormEditor.java:542)
	at org.netbeans.modules.form.FormModel.fireEvents(FormModel.java:939)
[catch] at org.netbeans.modules.form.FormModel$EventBroker.run(FormModel.java:1038)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
	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)

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java.lang.IllegalArgumentException: A node selection cannot contain nodes (jTree3 [JTree]) not underneath the root (Form NewJFrame).
	at org.openide.explorer.ExplorerManager.checkUnderRoot(ExplorerManager.java:488)
	at org.openide.explorer.ExplorerManager.access$300(ExplorerManager.java:52)
	at org.openide.explorer.ExplorerManager$1AtomicSetSelectedNodes.checkArgumentIsValid(ExplorerManager.java:194)
	at org.openide.explorer.ExplorerManager$1AtomicSetSelectedNodes.run(ExplorerManager.java:246)
	at org.openide.util.Mutex.readAccess(Mutex.java:261)
	at org.openide.explorer.ExplorerManager.setSelectedNodes(ExplorerManager.java:253)
	at org.openide.explorer.ExplorerManager.setSelectedNodes0(ExplorerManager.java:357)
	at org.openide.explorer.ExplorerManager$Listener.run(ExplorerManager.java:881)
	at org.openide.util.Mutex.readAccess(Mutex.java:261)
	at org.openide.explorer.ExplorerManager$Listener.run(ExplorerManager.java:847)
	at org.openide.util.Task.run(Task.java:207)
	at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:469)
[catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:870)