java.lang.AssertionError: Wrong diagnostic handler: com.sun.tools.javac.util.Log$DiscardDiagnosticHandler@1d5ec8d
Thread dump:
Inactive RequestProcessor thread [Was:Spellchecker/org.netbeans.modules.spellchecker.ComponentPeer$2]
	java.lang.Object.wait(Native Method)
	org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1978)
AWT-Shutdown
	java.lang.Object.wait(Native Method)
	java.lang.Object.wait(Object.java:503)
	sun.awt.AWTAutoShutdown.run(AWTAutoShutdown.java:296)
	java.lang.Thread.run(Thread.java:745)
Inactive RequestProcessor thread [Was:org.netbeans.modules.parsing.spi.Scheduler/org.netbeans.modules.parsing.spi.Scheduler$2]
	java.lang.Object.wait(Native Method)
	org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1978)
RequestProcessor queue manager
	java.lang.Object.wait(Native Method)
	org.openide.util.RequestProcessor$TickTac.obtainFirst(RequestProcessor.java:2256)
	org.openide.util.RequestProcessor$TickTac.run(RequestProcessor.java:2232)
Inactive RequestProcessor 
   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.processing.JavacProcessingEnvironment$Round.showDiagnostics(JavacProcessingEnvironment.java:1075)
   at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:1131)
   at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1230)
   at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:1117)
   at com.sun.tools.javac.main.JavaCompiler.complete(JavaCompiler.java:825)
   at com.sun.tools.javac.main.JavaCompiler$1.complete(JavaCompiler.java:318)
   at com.sun.tools.javac.jvm.ClassReader.fillIn(ClassReader.java:2589)
   at com.sun.tools.javac.jvm.ClassReader.complete(ClassReader.java:2484)
   at com.sun.tools.javac.jvm.ClassReader.access$000(ClassReader.java:77)
   at com.sun.tools.javac.jvm.ClassReader$1.complete(ClassReader.java:244)
   at com.sun.tools.javac.code.Symbol.complete(Symbol.java:577)
   at com.sun.tools.javac.code.Symbol$ClassSymbol.complete(Symbol.java:1053)
   at com.sun.tools.javac.jvm.ClassReader.loadClass(ClassReader.java:2678)
   at com.sun.tools.javac.comp.Resolve.loadClass(Resolve.java:1890)
   at com.sun.tools.javac.comp.Resolve.findIdentInPackage(Resolve.java:2136)
   at com.sun.tools.javac.comp.Attr$IdentAttributer.visitMemberSelect(Attr.java:421)
   at com.sun.tools.javac.comp.Attr$IdentAttributer.visitMemberSelect(Attr.java:412)
   at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1909)
   at com.sun.tools.javac.comp.Attr.attribIdent(Attr.java:408)
   at com.sun.tools.javac.main.JavaCompiler.resolveIdent(JavaCompiler.java:724)
   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.netbeans.modules.refactoring.java.plugins.JavaWhereUsedQueryPlugin$1.run(JavaWhereUsedQueryPlugin.java:329)
   at org.netbeans.modules.refactoring.java.plugins.JavaWhereUsedQueryPlugin$1.run(JavaWhereUsedQueryPlugin.java:244)
   at org.netbeans.api.java.source.JavaSource$MultiTask.run(JavaSource.java:493)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:598)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:155)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:139)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:206)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:203)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:74)
   at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:203)
   at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:106)
   at org.netbeans.api.java.source.JavaSource.runUserActionTaskImpl(JavaSource.java:443)
   at org.netbeans.api.java.source.JavaSource.runUserActionTask(JavaSource.java:414)
   at org.netbeans.modules.refactoring.java.plugins.JavaWhereUsedQueryPlugin.getRelevantFiles(JavaWhereUsedQueryPlugin.java:354)
   at org.netbeans.modules.refactoring.java.plugins.JavaWhereUsedQueryPlugin.getRelevantFiles(JavaWhereUsedQueryPlugin.java:214)
   at org.netbeans.modules.refactoring.java.plugins.JavaWhereUsedQueryPlugin.prepare(JavaWhereUsedQueryPlugin.java:399)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare2(AbstractRefactoring.java:437)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare(AbstractRefactoring.java:421)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.prepare(AbstractRefactoring.java:232)
   at org.netbeans.modules.refactoring.spi.impl.ParametersPanel$Prepare$2.run(ParametersPanel.java:1036)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)