java.lang.ClassNotFoundException: org.apache.xerces.xni.XNIException
   at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
   at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
   at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
Caused: java.lang.ClassNotFoundException: org.apache.xerces.xni.XNIException starting from ModuleCL@355971ce[org.netbeans.modules.xml.tax] with possible defining loaders null and declared parents [ModuleCL@53ad876a[org.openide.dialogs], org.netbeans.MainImpl$BootClassLoader@61413e5a, ModuleCL@74a83c5d[org.openide.nodes], ModuleCL@62f185b0[org.openide.loaders], ModuleCL@168f6724[org.openide.text], ModuleCL@79a70972[org.netbeans.libs.xerces], ModuleCL@752c2fab[org.netbeans.api.xml], ModuleCL@1da5cff8[org.openide.explorer], ModuleCL@5f81c977[org.openide.awt], ModuleCL@706485e4[org.netbeans.modules.xml]]
   at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:224)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
Caused: java.lang.NoClassDefFoundError: org/apache/xerces/xni/XNIException
   at java.lang.ClassLoader.defineClass1(ClassLoader.java:0)
   at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
   at org.netbeans.JarClassLoader.doLoadClass(JarClassLoader.java:284)
Caused: java.lang.NoClassDefFoundError: org/apache/xerces/xni/XNIException while loading org.netbeans.tax.io.XNIBuilder$DTDStopException; see http://wiki.netbeans.org/DevFaqTroubleshootClassNotFound
   at org.netbeans.ProxyClassLoader.selfLoadClass(ProxyClassLoader.java:263)
   at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:187)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
   at java.lang.Class.getDeclaredConstructors0(Class.java:0)
   at java.lang.Class.privateGetDeclaredConstructors(Class.java:2413)
   at java.lang.Class.getConstructor0(Class.java:2723)
   at java.lang.Class.getConstructor(Class.java:1676)
   at org.netbeans.modules.xml.tax.parser.TreeStreamSource.getImplementation(TreeStreamSource.java:166)
   at org.netbeans.modules.xml.tax.parser.TreeStreamSource.getBuilder(TreeStreamSource.java:106)
   at org.netbeans.modules.xml.tax.parser.XMLParsingSupport.parse(XMLParsingSupport.java:71)
   at org.netbeans.modules.apisupport.project.layers.LayerUtils$CookieImpl.openDocumentRoot(LayerUtils.java:255)
   at org.netbeans.modules.apisupport.project.layers.WritableXMLFileSystem.<init>(WritableXMLFileSystem.java:141)
   at org.netbeans.modules.apisupport.project.api.LayerHandle.layer(LayerHandle.java:155)
   at org.netbeans.modules.apisupport.project.layers.LayerNode$LayerChildren.createKeys(LayerNode.java:126)
   at org.openide.nodes.AsynchChildren.run(AsynchChildren.java:209)
Caused: org.openide.util.RequestProcessor$SlowItem: task failed due to: java.lang.NoClassDefFoundError: org/apache/xerces/xni/XNIException while loading org.netbeans.tax.io.XNIBuilder$DTDStopException; see http://wiki.netbeans.org/DevFaqTroubleshootClassNotFound
   at org.openide.util.RequestProcessor$Task.schedule(RequestProcessor.java:1473)
   at org.openide.nodes.AsynchChildren.addNotify(AsynchChildren.java:89)
   at org.openide.nodes.Children.callAddNotify(Children.java:575)
   at org.openide.nodes.EntrySupportDefault.getArray(EntrySupportDefault.java:650)
   at org.openide.nodes.EntrySupportDefault.getNodes(EntrySupportDefault.java:121)
   at org.openide.nodes.EntrySupportDefault.getNodes(EntrySupportDefault.java:172)
   at org.openide.nodes.Children.getNodes(Children.java:469)
   at org.openide.nodes.FilterNode$Children$DefaultSupport.updateKeys(FilterNode.java:1710)
   at org.openide.nodes.FilterNode$Children$DefaultSupport.update(FilterNode.java:1697)
   at org.openide.nodes.FilterNode$Children.addNotifyImpl(FilterNode.java:1488)
   at org.openide.nodes.FilterNode$Children.addNotify(FilterNode.java:1481)
   at org.openide.nodes.Children.callAddNotify(Children.java:575)
   at org.openide.nodes.EntrySupportDefault.getArray(EntrySupportDefault.java:650)
   at org.openide.nodes.EntrySupportDefault.getNodes(EntrySupportDefault.java:121)
   at org.openide.nodes.EntrySupportDefault.getNodes(EntrySupportDefault.java:172)
   at org.openide.nodes.Children.getNodes(Children.java:469)
   at org.openide.nodes.FilterNode$Children$DefaultSupport.updateKeys(FilterNode.java:1710)
   at org.openide.nodes.FilterNode$Children$DefaultSupport.update(FilterNode.java:1697)
   at org.openide.nodes.FilterNode$Children.addNotifyImpl(FilterNode.java:1488)
   at org.openide.nodes.FilterNode$Children.addNotify(FilterNode.java:1481)
   at org.openide.nodes.Children.callAddNotify(Children.java:575)
   at org.openide.nodes.EntrySupportDefault.getArray(EntrySupportDefault.java:650)
   at org.openide.nodes.EntrySupportDefault.getNodes(EntrySupportDefault.java:121)
   at org.openide.nodes.EntrySupportDefault.getNodes(EntrySupportDefault.java:172)
   at org.openide.nodes.EntrySupportDefault.getNodesCount(EntrySupportDefault.java:176)
   at org.openide.nodes.Children.getNodesCount(Children.java:509)
   at org.openide.nodes.Node$1.run(Node.java:530)
   at org.openide.util.Mutex.postRequest(Mutex.java:1274)
   at org.openide.util.Mutex.postRequest(Mutex.java:1220)
   at org.openide.util.Mutex.postWriteRequest(Mutex.java:592)
   at org.openide.nodes.Node.setChildren(Node.java:504)
   at org.openide.nodes.FilterNode.changeOriginal(FilterNode.java:436)
   at org.openide.loaders.FolderChildren$DelayedNode.run(FolderChildren.java:548)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1432)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2042)