java.lang.AssertionError: Wrong diagnostic handler: com.sun.tools.javac.util.Log$DeferredDiagnosticHandler@3749fda8
Thread dump:
Active Reference Queue Daemon
	java.lang.Object.wait(Native Method)
	java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:135)
	org.openide.util.lookup.implspi.ActiveQueue$Daemon.run(ActiveQueue.java:178)
AWT-XAWT
	sun.awt.X11.XToolkit.waitForEvents(Native Method)
	sun.awt.X11.XToolkit.run(XToolkit.java:541)
	sun.awt.X11.XToolkit.run(XToolkit.java:505)
	java.lang.Thread.run(Thread.java:745)
org.netbeans.modules.java.hints.declarative.DeclarativeHintRegistry
	sun.nio.fs.UnixNativeDispatcher.stat0(Native Method)
	sun.nio.fs.UnixNativeDispatcher.stat(UnixNativeDispatcher.java:286)
	sun.nio.fs.UnixFileAttributes.get(UnixFileAttributes.java:66)
	sun.nio.fs.UnixUriUtils.toUri(UnixUriUtils.java:118)
	sun.nio.fs.UnixPath.toUri(UnixPath.java:883)
	org.openide.util.Utilities.toURI(Utilities.java:3116)
	org.openide.filesystems.FileUtil.toFileObject(FileUtil.java:888)
	org.openide.filesystem
   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:484)
   at com.sun.tools.javac.api.JavacTaskImpl.attributeTree(JavacTaskImpl.java:765)
   at org.netbeans.api.java.source.TreeUtilities.attributeTree(TreeUtilities.java:663)
   at org.netbeans.modules.editor.java.JavaCodeTemplateProcessor.type(JavaCodeTemplateProcessor.java:698)
   at org.netbeans.modules.editor.java.JavaCodeTemplateProcessor.getProposedValue(JavaCodeTemplateProcessor.java:441)
   at org.netbeans.modules.editor.java.JavaCodeTemplateProcessor.updateDefaultValues(JavaCodeTemplateProcessor.java:158)
   at org.netbeans.lib.editor.codetemplates.CodeTemplateInsertHandler.processTemplate(CodeTemplateInsertHandler.java:248)
   at org.netbeans.lib.editor.codetemplates.CodeTemplateManagerOperation.insert(CodeTemplateManagerOperation.java:298)
   at org.netbeans.lib.editor.codetemplates.api.CodeTemplate.insert(CodeTemplate.java:107)
   at org.netbeans.modules.editor.java.JavaCompletionItem.process(JavaCompletionItem.java:518)
   at org.netbeans.modules.editor.java.JavaCompletionItem.defaultAction(JavaCompletionItem.java:283)
   at org.netbeans.modules.editor.java.LazyJavaCompletionItem.defaultAction(LazyJavaCompletionItem.java:147)
   at org.netbeans.modules.editor.completion.CompletionImpl.dispatchKeyEvent(CompletionImpl.java:676)
   at org.netbeans.modules.editor.completion.CompletionImpl.keyPressed(CompletionImpl.java:404)
   at java.awt.AWTEventMulticaster.keyPressed(AWTEventMulticaster.java:250)
   at java.awt.Component.processKeyEvent(Component.java:6474)
   at javax.swing.JComponent.processKeyEvent(JComponent.java:2828)
   at java.awt.Component.processEvent(Component.java:6293)
   at java.awt.Container.processEvent(Container.java:2229)
   at java.awt.Component.dispatchEventImpl(Component.java:4872)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Component.dispatchEvent(Component.java:4698)
   at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1895)
   at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:762)
   at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1027)
   at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:899)
   at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:727)
   at java.awt.Component.dispatchEventImpl(Component.java:4742)
   at java.awt.Container.dispatchEventImpl(Container.java:2287)
   at java.awt.Window.dispatchEventImpl(Window.java:2719)
   at java.awt.Component.dispatchEvent(Component.java:4698)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
   at java.awt.EventQueue.access$200(EventQueue.java:103)
   at java.awt.EventQueue$3.run(EventQueue.java:694)
   at java.awt.EventQueue$3.run(EventQueue.java:692)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
   at java.awt.EventQueue$4.run(EventQueue.java:708)
   at java.awt.EventQueue$4.run(EventQueue.java:706)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)