XPathView error

Assertion failed:
java.lang.Throwable
at com.intellij.openapi.diagnostic.Logger.assertTrue(Logger.java:89)
at com.intellij.openapi.diagnostic.Logger.assertTrue(Logger.java:96)
at com.intellij.psi.impl.file.impl.FileManagerImpl.getCachedPsiFile(FileManagerImpl.java:80)
at com.intellij.psi.impl.source.tree.injected.InjectedLanguageManagerImpl.a(InjectedLanguageManagerImpl.java:54)
at com.intellij.psi.impl.source.tree.injected.InjectedLanguageManagerImpl.a(InjectedLanguageManagerImpl.java:32)
at com.intellij.psi.impl.source.tree.injected.InjectedLanguageManagerImpl.createVirtualFile(InjectedLanguageManagerImpl.java:134)
at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil$InjectedPsiProvider$MyMultiHostRegistrar.doneInjecting(InjectedLanguageUtil.java:5)
at com.intellij.psi.impl.source.tree.injected.InjectedLanguageManagerImpl$PsiManagerRegisteredInjectorsAdapter$1.addPlace(InjectedLanguageManagerImpl.java:3)
at org.intellij.lang.xpath.xslt.impl.XPathLanguageInjector.getLanguagesToInject(XPathLanguageInjector.java:151)
at com.intellij.psi.impl.source.tree.injected.InjectedLanguageManagerImpl$PsiManagerRegisteredInjectorsAdapter.getLanguagesToInject(InjectedLanguageManagerImpl.java:4)
at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil$InjectedPsiProvider$MyInjProcessor.process(InjectedLanguageUtil.java:10)
at com.intellij.psi.impl.source.tree.injected.InjectedLanguageManagerImpl.processInPlaceInjectorsFor(InjectedLanguageManagerImpl.java:91)
at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil$InjectedPsiProvider.a(InjectedLanguageUtil.java:18)
at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil$InjectedPsiProvider.compute(InjectedLanguageUtil.java:10)
at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil$InjectedPsiProvider.compute(InjectedLanguageUtil.java:8)
at com.intellij.psi.impl.ParameterizedCachedValueImpl.getValue(ParameterizedCachedValueImpl.java:6)
at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.a(InjectedLanguageUtil.java:205)
at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.enumerate(InjectedLanguageUtil.java:131)
at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.commitAllInjectedDocuments(InjectedLanguageUtil.java:13)
at com.intellij.psi.impl.PsiDocumentManagerImpl$1.run(PsiDocumentManagerImpl.java:15)
at com.intellij.openapi.application.impl.ApplicationImpl.runWriteAction(ApplicationImpl.java:147)
at com.intellij.psi.impl.PsiDocumentManagerImpl.a(PsiDocumentManagerImpl.java:187)
at com.intellij.psi.impl.PsiDocumentManagerImpl.commitDocument(PsiDocumentManagerImpl.java:154)
at com.intellij.psi.impl.PsiDocumentManagerImpl.commitAllDocuments(PsiDocumentManagerImpl.java:69)
at com.intellij.codeInsight.daemon.impl.TextEditorBackgroundHighlighter.a(TextEditorBackgroundHighlighter.java:20)
at com.intellij.codeInsight.daemon.impl.TextEditorBackgroundHighlighter.createPassesForEditor(TextEditorBackgroundHighlighter.java:22)
at com.intellij.codeInsight.daemon.impl.TextEditorBackgroundHighlighter.createPassesForEditor(TextEditorBackgroundHighlighter.java:7)
at com.intellij.codeInsight.daemon.impl.DaemonCodeAnalyzerImpl$2.run(DaemonCodeAnalyzerImpl.java:4)
at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.run(LaterInvocator.java:22)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
at com.intellij.ide.IdeEventQueue.c(IdeEventQueue.java:50)
at com.intellij.ide.IdeEventQueue.b(IdeEventQueue.java:86)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:146)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:176)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)