java.lang.ClassCastException: org.netbeans.modules.html.editor.xhtml.XhtmlElLanguage$XhtmlELParser$FakeResult cannot be cast to org.netbeans.modules.html.editor.api.gsf.HtmlParserResult
   at org.netbeans.modules.css.visual.HtmlEditorSourceTask.run(HtmlEditorSourceTask.java:72)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:561)
   at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:737)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
   at java.util.concurrent.FutureTask.run(FutureTask.java:166)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
   at java.lang.Thread.run(Thread.java:722)