java.lang.AssertionError: Wrong diagnostic handler: com.sun.tools.javac.util.Log$DeferredDiagnosticHandler@2b053735
Thread dump:
Reference Handler
	java.lang.Object.wait(Native Method)
	java.lang.Object.wait(Object.java:502)
	java.lang.ref.Reference$ReferenceHandler.run(Reference.java:157)
Editor Parsing Loop (201411181905)
	java.lang.Thread.dumpThreads(Native Method)
	java.lang.Thread.getAllStackTraces(Thread.java:1603)
	com.sun.tools.javac.util.Log.popDiagnosticHandler(Log.java:469)
	com.sun.tools.javac.main.JavaCompiler.resolveIdent(JavaCompiler.java:726)
	com.sun.tools.javac.model.JavacElements.binaryNameToClassSymbol(JavacElements.java:129)
	com.sun.tools.javac.model.JavacElements.getTypeElementByBinaryName(JavacElements.java:119)
	org.netbeans.api.java.source.ElementHandle.getTypeElementByBinaryName(ElementHandle.java:622)
	org.netbeans.api.java.source.ElementHandle.resolveImpl(ElementHandle.java:160)
	org.netbeans.api.java.source.ElementHandle.resolve(ElementHandle.java:136)
	org.vaadin.netbeans.impl.A
   at com.sun.tools.javac.util.Assert.error(Assert.java:133)
   at com.sun.tools.javac.util.Assert.check(Assert.java:86)
   at com.sun.tools.javac.util.Log.popDiagnosticHandler(Log.java:481)
   at com.sun.tools.javac.main.JavaCompiler.resolveIdent(JavaCompiler.java:726)
   at com.sun.tools.javac.model.JavacElements.binaryNameToClassSymbol(JavacElements.java:129)
   at com.sun.tools.javac.model.JavacElements.getTypeElementByBinaryName(JavacElements.java:119)
   at org.netbeans.api.java.source.ElementHandle.getTypeElementByBinaryName(ElementHandle.java:622)
   at org.netbeans.api.java.source.ElementHandle.resolveImpl(ElementHandle.java:160)
   at org.netbeans.api.java.source.ElementHandle.resolve(ElementHandle.java:136)
   at org.vaadin.netbeans.impl.AllClassesStrategy.findAllTypes(AllClassesStrategy.java:117)
   at org.vaadin.netbeans.impl.AllClassesStrategy.initTypes(AllClassesStrategy.java:87)
   at org.vaadin.netbeans.impl.AllClassesStrategy.collectDescendants(AllClassesStrategy.java:59)
   at org.vaadin.netbeans.impl.AllClassesStrategy.getSourceSubclasses(AllClassesStrategy.java:44)
   at org.vaadin.netbeans.editor.analyzer.StateAccessorAnalyzer.addDescription(StateAccessorAnalyzer.java:116)
   at org.vaadin.netbeans.editor.analyzer.StateAccessorAnalyzer.analyze(StateAccessorAnalyzer.java:60)
   at org.vaadin.netbeans.editor.hints.ComponentState.checkSharedStateAccessor(ComponentState.java:41)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:0)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:483)
   at org.netbeans.modules.java.hints.providers.code.CodeHintProviderImpl$WorkerImpl.createErrors(CodeHintProviderImpl.java:336)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.runHint(HintsInvoker.java:798)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.access$400(HintsInvoker.java:111)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.runAndAdd(HintsInvoker.java:657)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker$ScannerImpl.scanDoNotGoDeeper(HintsInvoker.java:711)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeSuggestions(HintsInvoker.java:396)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:232)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:209)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:182)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsInvoker.computeHints(HintsInvoker.java:149)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsTask.run(HintsTask.java:114)
   at org.netbeans.modules.java.hints.spiimpl.hints.HintsTask.run(HintsTask.java:83)
   at org.netbeans.modules.java.source.JavaSourceAccessor$CancelableTaskWrapper.run(JavaSourceAccessor.java:298)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:573)
   at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:744)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
   at java.util.concurrent.FutureTask.run(FutureTask.java:266)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)