java.lang.IllegalArgumentException: Equal objects must have equal hashcodes. During rehashing, Trove discovered that the following 
two objects claim to be equal (as in java.lang.Object.equals()) but their hashCodes (or those calculated by your TObjectHashingStrategy) 
are not equal.This violates the general contract of java.lang.Object.hashCode().  See bullet point two in that method's documentation. 
object #1 =RangeMarker[valid,196,228]; object #2 =RangeMarker[valid,196,228]
	at gnu.trove.TObjectHash.throwObjectContractViolation(TObjectHash.java:310)
	at gnu.trove.THashMap.rehash(THashMap.java:341)
	at gnu.trove.THash.postInsertHook(THash.java:242)
	at gnu.trove.THashMap.put(THashMap.java:175)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.registerDocumentRange(InjectedLanguageUtil.java:446)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.parseInjectedPsiFile(InjectedLanguageUtil.java:116)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.access$200(InjectedLanguageUtil.java:53)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil$InjectedPsiProvider$2.addPlace(InjectedLanguageUtil.java:339)
	at com.intellij.gwt.jsinject.JsInjector.getLanguagesToInject(JsInjector.java:62)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil$InjectedPsiProvider.queryInjectionHostForPsi(InjectedLanguageUtil.java:346)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil$InjectedPsiProvider.compute(InjectedLanguageUtil.java:311)
	at com.intellij.psi.impl.CachedValueImpl.getValue(CachedValueImpl.java:63)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.getInjectedPsiFiles(InjectedLanguageUtil.java:71)
	at com.intellij.psi.impl.source.tree.PsiCommentImpl.getInjectedPsi(PsiCommentImpl.java:33)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.commitAllInjectedDocuments(InjectedLanguageUtil.java:424)
	at com.intellij.psi.impl.PsiDocumentManagerImpl.commit(PsiDocumentManagerImpl.java:334)
	at com.intellij.psi.impl.PsiDocumentManagerImpl$1.run(PsiDocumentManagerImpl.java:186)
	at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:709)
	at com.intellij.psi.impl.PsiDocumentManagerImpl.commitDocument(PsiDocumentManagerImpl.java:171)
	at com.intellij.psi.impl.PsiDocumentManagerImpl.commitAllDocuments(PsiDocumentManagerImpl.java:160)
	at com.intellij.codeInsight.daemon.impl.TextEditorBackgroundHighlighter.getPasses(TextEditorBackgroundHighlighter.java:109)
	at com.intellij.codeInsight.daemon.impl.TextEditorBackgroundHighlighter.createPassesForEditor(TextEditorBackgroundHighlighter.java:187)
	at com.intellij.codeInsight.daemon.impl.TextEditorBackgroundHighlighter.createPassesForEditor(TextEditorBackgroundHighlighter.java:56)
	at com.intellij.codeInsight.daemon.impl.DaemonCodeAnalyzerImpl.updateAll(DaemonCodeAnalyzerImpl.java:368)
	at com.intellij.codeInsight.daemon.impl.DaemonCodeAnalyzerImpl.access$2200(DaemonCodeAnalyzerImpl.java:94)
	at com.intellij.codeInsight.daemon.impl.DaemonCodeAnalyzerImpl$8$1UpdateEditorRunnable.run(DaemonCodeAnalyzerImpl.java:849)
	at com.intellij.codeInsight.daemon.impl.DaemonCodeAnalyzerImpl$8.run(DaemonCodeAnalyzerImpl.java:853)
	at com.intellij.util.Alarm$1.run(Alarm.java:103)
	at com.intellij.util.Alarm$MyThread$1.run(Alarm.java:246)
	at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.run(LaterInvocator.java:216)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
	at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:374)
	at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:365)
	at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:274)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)