java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
	at java.util.LinkedList.entry(LinkedList.java:360)
	at java.util.LinkedList.get(LinkedList.java:303)
	at org.openide.explorer.view.VisualizerNode.getChildAt(VisualizerNode.java:213)
	at javax.swing.tree.DefaultTreeModel.getChild(DefaultTreeModel.java:156)
	at org.netbeans.jemmy.operators.JTreeOperator.getChild(JTreeOperator.java:470)
	at org.netbeans.jemmy.operators.JTreeOperator$2.actionProduced(JTreeOperator.java:585)
	at org.netbeans.jemmy.Waiter.checkActionProduced(Waiter.java:242)
	at org.netbeans.jemmy.Waiter.waitAction(Waiter.java:135)
	at org.netbeans.jemmy.operators.JTreeOperator.findPathPrimitive(JTreeOperator.java:2307)
	at org.netbeans.jemmy.operators.JTreeOperator.findPathPrimitive(JTreeOperator.java:2317)
	at org.netbeans.jemmy.operators.JTreeOperator.findPath(JTreeOperator.java:607)
	at org.netbeans.jellytools.nodes.Node.findSubPath(Node.java:363)
	at org.netbeans.jellytools.nodes.Node.findSubPath(Node.java:354)
	at org.netbeans.jellytools.nodes.Node.<init>(Node.java:76)
	at validation.IDEValidation.testDb(IDEValidation.java:134)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:324)
	at junit.framework.TestCase.runTest(TestCase.java:154)
	at junit.framework.TestCase.runBare(TestCase.java:127)
	at org.netbeans.jellytools.JellyTestCase.runBare(JellyTestCase.java:112)
	at junit.framework.TestResult$1.protect(TestResult.java:106)
	at junit.framework.TestResult.runProtected(TestResult.java:124)
	at junit.framework.TestResult.run(TestResult.java:109)
	at junit.framework.TestCase.run(TestCase.java:118)
	at org.netbeans.junit.NbTestCase.run(NbTestCase.java:119)
	at junit.framework.TestSuite.runTest(TestSuite.java:208)
	at junit.framework.TestSuite.run(TestSuite.java:203)
	at org.netbeans.xtest.testrunner.JUnitTestRunner.runTests(JUnitTestRunner.java:173)
	at org.netbeans.xtest.testrunner.JUnitTestRunner.runTests(JUnitTestRunner.java:129)
	at org.netbeans.xtest.plugin.ide.MainWithExec.run(MainWithExec.java:187)
	at org.netbeans.xtest.plugin.ide.Main$2.run(Main.java:355)
	at java.lang.Thread.run(Thread.java:534)