Getting a lot of these:

com.intellij.psi.impl.source.xml.XmlProcessingInstructionImpl cannot be cast to com.intellij.psi.xml.XmlAttribute: com.intellij.psi.impl.source.xml.XmlProcessingInstructionImpl cannot be cast to com.intellij.psi.xml.XmlAttribute
java.lang.ClassCastException: com.intellij.psi.impl.source.xml.XmlProcessingInstructionImpl cannot be cast to com.intellij.psi.xml.XmlAttribute
	at org.kohsuke.stapler.idea.JellyLanguageInjector.getLanguagesToInject(JellyLanguageInjector.java:34)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider$MyInjProcessor.process(InjectedPsiCachedValueProvider.java:81)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageManagerImpl.processInPlaceInjectorsFor(InjectedLanguageManagerImpl.java:432)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider.doCompute(InjectedPsiCachedValueProvider.java:61)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.a(InjectedLanguageUtil.java:225)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.enumerate(InjectedLanguageUtil.java:143)
	at com.intellij.codeInsight.daemon.impl.LineMarkersPass.collectLineMarkersForInjected(LineMarkersPass.java:206)
	at com.intellij.codeInsight.daemon.impl.LineMarkersPass.collectInformationWithProgress(LineMarkersPass.java:118)
	at com.intellij.codeInsight.daemon.impl.ProgressableTextEditorHighlightingPass.doCollectInformation(ProgressableTextEditorHighlightingPass.java:58)
	at com.intellij.codeHighlighting.TextEditorHighlightingPass.collectInformation(TextEditorHighlightingPass.java:61)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1$1.run(PassExecutorService.java:350)
	at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1049)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1.run(PassExecutorService.java:342)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:218)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.a(PassExecutorService.java:340)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.run(PassExecutorService.java:316)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:134)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:131)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at com.intellij.concurrency.PrioritizedFutureTask.access$101(PrioritizedFutureTask.java:31)
	at com.intellij.concurrency.PrioritizedFutureTask$1.run(PrioritizedFutureTask.java:70)
	at com.intellij.concurrency.PrioritizedFutureTask.run(PrioritizedFutureTask.java:113)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:680)

java.lang.ClassCastException: com.intellij.psi.impl.source.xml.XmlProcessingInstructionImpl cannot be cast to com.intellij.psi.xml.XmlAttribute
	at org.kohsuke.stapler.idea.JellyLanguageInjector.getLanguagesToInject(JellyLanguageInjector.java:34)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider$MyInjProcessor.process(InjectedPsiCachedValueProvider.java:81)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageManagerImpl.processInPlaceInjectorsFor(InjectedLanguageManagerImpl.java:432)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider.doCompute(InjectedPsiCachedValueProvider.java:61)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.a(InjectedLanguageUtil.java:225)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.enumerate(InjectedLanguageUtil.java:143)
	at com.intellij.codeInsight.daemon.impl.LineMarkersPass.collectLineMarkersForInjected(LineMarkersPass.java:206)
	at com.intellij.codeInsight.daemon.impl.SlowLineMarkersPass.doCollectInformation(SlowLineMarkersPass.java:66)
	at com.intellij.codeHighlighting.TextEditorHighlightingPass.collectInformation(TextEditorHighlightingPass.java:61)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1$1.run(PassExecutorService.java:350)
	at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1049)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1.run(PassExecutorService.java:342)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:218)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.a(PassExecutorService.java:340)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.run(PassExecutorService.java:316)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:134)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:131)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at com.intellij.concurrency.PrioritizedFutureTask.access$101(PrioritizedFutureTask.java:31)
	at com.intellij.concurrency.PrioritizedFutureTask$1.run(PrioritizedFutureTask.java:70)
	at com.intellij.concurrency.PrioritizedFutureTask.run(PrioritizedFutureTask.java:113)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:680)

java.lang.ClassCastException: com.intellij.psi.impl.source.xml.XmlProcessingInstructionImpl cannot be cast to com.intellij.psi.xml.XmlAttribute
	at org.kohsuke.stapler.idea.JellyLanguageInjector.getLanguagesToInject(JellyLanguageInjector.java:34)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider$MyInjProcessor.process(InjectedPsiCachedValueProvider.java:81)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageManagerImpl.processInPlaceInjectorsFor(InjectedLanguageManagerImpl.java:432)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider.doCompute(InjectedPsiCachedValueProvider.java:61)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.a(InjectedLanguageUtil.java:225)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.enumerate(InjectedLanguageUtil.java:143)
	at com.intellij.codeInsight.daemon.impl.LineMarkersPass.collectLineMarkersForInjected(LineMarkersPass.java:206)
	at com.intellij.codeInsight.daemon.impl.LineMarkersPass.collectInformationWithProgress(LineMarkersPass.java:118)
	at com.intellij.codeInsight.daemon.impl.ProgressableTextEditorHighlightingPass.doCollectInformation(ProgressableTextEditorHighlightingPass.java:58)
	at com.intellij.codeHighlighting.TextEditorHighlightingPass.collectInformation(TextEditorHighlightingPass.java:61)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1$1.run(PassExecutorService.java:350)
	at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1049)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1.run(PassExecutorService.java:342)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:218)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.a(PassExecutorService.java:340)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.run(PassExecutorService.java:316)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:134)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:131)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at com.intellij.concurrency.PrioritizedFutureTask.access$101(PrioritizedFutureTask.java:31)
	at com.intellij.concurrency.PrioritizedFutureTask$1.run(PrioritizedFutureTask.java:70)
	at com.intellij.concurrency.PrioritizedFutureTask.run(PrioritizedFutureTask.java:113)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:680)

java.util.concurrent.ExecutionException: java.lang.ClassCastException: com.intellij.psi.impl.source.xml.XmlProcessingInstructionImpl cannot be cast to com.intellij.psi.xml.XmlAttribute
	at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
	at java.util.concurrent.FutureTask.get(FutureTask.java:83)
	at com.intellij.concurrency.PrioritizedFutureTask.access$301(PrioritizedFutureTask.java:31)
	at com.intellij.concurrency.PrioritizedFutureTask$1.run(PrioritizedFutureTask.java:77)
	at com.intellij.concurrency.PrioritizedFutureTask.run(PrioritizedFutureTask.java:113)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:680)
Caused by: java.lang.ClassCastException: com.intellij.psi.impl.source.xml.XmlProcessingInstructionImpl cannot be cast to com.intellij.psi.xml.XmlAttribute
	at org.kohsuke.stapler.idea.JellyLanguageInjector.getLanguagesToInject(JellyLanguageInjector.java:34)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider$MyInjProcessor.process(InjectedPsiCachedValueProvider.java:81)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageManagerImpl.processInPlaceInjectorsFor(InjectedLanguageManagerImpl.java:432)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider.doCompute(InjectedPsiCachedValueProvider.java:61)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.a(InjectedLanguageUtil.java:225)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.enumerate(InjectedLanguageUtil.java:143)
	at com.intellij.codeInsight.daemon.impl.LineMarkersPass.collectLineMarkersForInjected(LineMarkersPass.java:206)
	at com.intellij.codeInsight.daemon.impl.LineMarkersPass.collectInformationWithProgress(LineMarkersPass.java:118)
	at com.intellij.codeInsight.daemon.impl.ProgressableTextEditorHighlightingPass.doCollectInformation(ProgressableTextEditorHighlightingPass.java:58)
	at com.intellij.codeHighlighting.TextEditorHighlightingPass.collectInformation(TextEditorHighlightingPass.java:61)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1$1.run(PassExecutorService.java:350)
	at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1049)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1.run(PassExecutorService.java:342)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:218)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.a(PassExecutorService.java:340)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.run(PassExecutorService.java:316)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:134)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:131)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at com.intellij.concurrency.PrioritizedFutureTask.access$101(PrioritizedFutureTask.java:31)
	at com.intellij.concurrency.PrioritizedFutureTask$1.run(PrioritizedFutureTask.java:70)
	... 4 more

java.lang.ClassCastException: com.intellij.psi.impl.source.xml.XmlProcessingInstructionImpl cannot be cast to com.intellij.psi.xml.XmlAttribute
	at org.kohsuke.stapler.idea.JellyLanguageInjector.getLanguagesToInject(JellyLanguageInjector.java:34)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider$MyInjProcessor.process(InjectedPsiCachedValueProvider.java:81)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageManagerImpl.processInPlaceInjectorsFor(InjectedLanguageManagerImpl.java:432)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider.doCompute(InjectedPsiCachedValueProvider.java:61)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.a(InjectedLanguageUtil.java:225)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.enumerate(InjectedLanguageUtil.java:143)
	at com.intellij.codeInsight.daemon.impl.LineMarkersPass.collectLineMarkersForInjected(LineMarkersPass.java:206)
	at com.intellij.codeInsight.daemon.impl.LineMarkersPass.collectInformationWithProgress(LineMarkersPass.java:118)
	at com.intellij.codeInsight.daemon.impl.ProgressableTextEditorHighlightingPass.doCollectInformation(ProgressableTextEditorHighlightingPass.java:58)
	at com.intellij.codeHighlighting.TextEditorHighlightingPass.collectInformation(TextEditorHighlightingPass.java:61)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1$1.run(PassExecutorService.java:350)
	at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1049)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1.run(PassExecutorService.java:342)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:218)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.a(PassExecutorService.java:340)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.run(PassExecutorService.java:316)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:134)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:131)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at com.intellij.concurrency.PrioritizedFutureTask.access$101(PrioritizedFutureTask.java:31)
	at com.intellij.concurrency.PrioritizedFutureTask$1.run(PrioritizedFutureTask.java:70)
	at com.intellij.concurrency.PrioritizedFutureTask.run(PrioritizedFutureTask.java:113)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:680)

java.lang.ClassCastException: com.intellij.psi.impl.source.xml.XmlProcessingInstructionImpl cannot be cast to com.intellij.psi.xml.XmlAttribute
	at org.kohsuke.stapler.idea.JellyLanguageInjector.getLanguagesToInject(JellyLanguageInjector.java:34)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider$MyInjProcessor.process(InjectedPsiCachedValueProvider.java:81)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageManagerImpl.processInPlaceInjectorsFor(InjectedLanguageManagerImpl.java:432)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider.doCompute(InjectedPsiCachedValueProvider.java:61)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.a(InjectedLanguageUtil.java:225)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.enumerate(InjectedLanguageUtil.java:143)
	at com.intellij.codeInsight.daemon.impl.LineMarkersPass.collectLineMarkersForInjected(LineMarkersPass.java:206)
	at com.intellij.codeInsight.daemon.impl.SlowLineMarkersPass.doCollectInformation(SlowLineMarkersPass.java:66)
	at com.intellij.codeHighlighting.TextEditorHighlightingPass.collectInformation(TextEditorHighlightingPass.java:61)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1$1.run(PassExecutorService.java:350)
	at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1049)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1.run(PassExecutorService.java:342)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:218)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.a(PassExecutorService.java:340)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.run(PassExecutorService.java:316)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:134)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:131)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at com.intellij.concurrency.PrioritizedFutureTask.access$101(PrioritizedFutureTask.java:31)
	at com.intellij.concurrency.PrioritizedFutureTask$1.run(PrioritizedFutureTask.java:70)
	at com.intellij.concurrency.PrioritizedFutureTask.run(PrioritizedFutureTask.java:113)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:680)

java.lang.ClassCastException: com.intellij.psi.impl.source.xml.XmlProcessingInstructionImpl cannot be cast to com.intellij.psi.xml.XmlAttribute
	at org.kohsuke.stapler.idea.JellyLanguageInjector.getLanguagesToInject(JellyLanguageInjector.java:34)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider$MyInjProcessor.process(InjectedPsiCachedValueProvider.java:81)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageManagerImpl.processInPlaceInjectorsFor(InjectedLanguageManagerImpl.java:432)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider.doCompute(InjectedPsiCachedValueProvider.java:61)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.a(InjectedLanguageUtil.java:225)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.enumerate(InjectedLanguageUtil.java:143)
	at com.intellij.codeInsight.daemon.impl.LineMarkersPass.collectLineMarkersForInjected(LineMarkersPass.java:206)
	at com.intellij.codeInsight.daemon.impl.SlowLineMarkersPass.doCollectInformation(SlowLineMarkersPass.java:66)
	at com.intellij.codeHighlighting.TextEditorHighlightingPass.collectInformation(TextEditorHighlightingPass.java:61)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1$1.run(PassExecutorService.java:350)
	at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1049)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1.run(PassExecutorService.java:342)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:218)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.a(PassExecutorService.java:340)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.run(PassExecutorService.java:316)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:134)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:131)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at com.intellij.concurrency.PrioritizedFutureTask.access$101(PrioritizedFutureTask.java:31)
	at com.intellij.concurrency.PrioritizedFutureTask$1.run(PrioritizedFutureTask.java:70)
	at com.intellij.concurrency.PrioritizedFutureTask.run(PrioritizedFutureTask.java:113)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:680)

java.lang.ClassCastException: com.intellij.psi.impl.source.xml.XmlProcessingInstructionImpl cannot be cast to com.intellij.psi.xml.XmlAttribute
	at org.kohsuke.stapler.idea.JellyLanguageInjector.getLanguagesToInject(JellyLanguageInjector.java:34)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider$MyInjProcessor.process(InjectedPsiCachedValueProvider.java:81)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageManagerImpl.processInPlaceInjectorsFor(InjectedLanguageManagerImpl.java:432)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider.doCompute(InjectedPsiCachedValueProvider.java:61)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.a(InjectedLanguageUtil.java:225)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.enumerate(InjectedLanguageUtil.java:143)
	at com.intellij.codeInsight.daemon.impl.LineMarkersPass.collectLineMarkersForInjected(LineMarkersPass.java:206)
	at com.intellij.codeInsight.daemon.impl.SlowLineMarkersPass.doCollectInformation(SlowLineMarkersPass.java:66)
	at com.intellij.codeHighlighting.TextEditorHighlightingPass.collectInformation(TextEditorHighlightingPass.java:61)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1$1.run(PassExecutorService.java:350)
	at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1049)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1.run(PassExecutorService.java:342)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:218)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.a(PassExecutorService.java:340)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.run(PassExecutorService.java:316)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:134)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:131)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at com.intellij.concurrency.PrioritizedFutureTask.access$101(PrioritizedFutureTask.java:31)
	at com.intellij.concurrency.PrioritizedFutureTask$1.run(PrioritizedFutureTask.java:70)
	at com.intellij.concurrency.PrioritizedFutureTask.run(PrioritizedFutureTask.java:113)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:680)

java.util.concurrent.ExecutionException: java.lang.ClassCastException: com.intellij.psi.impl.source.xml.XmlProcessingInstructionImpl cannot be cast to com.intellij.psi.xml.XmlAttribute
	at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
	at java.util.concurrent.FutureTask.get(FutureTask.java:83)
	at com.intellij.concurrency.PrioritizedFutureTask.access$301(PrioritizedFutureTask.java:31)
	at com.intellij.concurrency.PrioritizedFutureTask$1.run(PrioritizedFutureTask.java:77)
	at com.intellij.concurrency.PrioritizedFutureTask.run(PrioritizedFutureTask.java:113)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:680)
Caused by: java.lang.ClassCastException: com.intellij.psi.impl.source.xml.XmlProcessingInstructionImpl cannot be cast to com.intellij.psi.xml.XmlAttribute
	at org.kohsuke.stapler.idea.JellyLanguageInjector.getLanguagesToInject(JellyLanguageInjector.java:34)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider$MyInjProcessor.process(InjectedPsiCachedValueProvider.java:81)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageManagerImpl.processInPlaceInjectorsFor(InjectedLanguageManagerImpl.java:432)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider.doCompute(InjectedPsiCachedValueProvider.java:61)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.a(InjectedLanguageUtil.java:225)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.enumerate(InjectedLanguageUtil.java:143)
	at com.intellij.codeInsight.daemon.impl.LineMarkersPass.collectLineMarkersForInjected(LineMarkersPass.java:206)
	at com.intellij.codeInsight.daemon.impl.SlowLineMarkersPass.doCollectInformation(SlowLineMarkersPass.java:66)
	at com.intellij.codeHighlighting.TextEditorHighlightingPass.collectInformation(TextEditorHighlightingPass.java:61)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1$1.run(PassExecutorService.java:350)
	at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1049)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1.run(PassExecutorService.java:342)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:218)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.a(PassExecutorService.java:340)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.run(PassExecutorService.java:316)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:134)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:131)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at com.intellij.concurrency.PrioritizedFutureTask.access$101(PrioritizedFutureTask.java:31)
	at com.intellij.concurrency.PrioritizedFutureTask$1.run(PrioritizedFutureTask.java:70)
	... 4 more

java.lang.ClassCastException: com.intellij.psi.impl.source.xml.XmlProcessingInstructionImpl cannot be cast to com.intellij.psi.xml.XmlAttribute
	at org.kohsuke.stapler.idea.JellyLanguageInjector.getLanguagesToInject(JellyLanguageInjector.java:34)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider$MyInjProcessor.process(InjectedPsiCachedValueProvider.java:81)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageManagerImpl.processInPlaceInjectorsFor(InjectedLanguageManagerImpl.java:432)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider.doCompute(InjectedPsiCachedValueProvider.java:61)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.a(InjectedLanguageUtil.java:225)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.enumerate(InjectedLanguageUtil.java:143)
	at com.intellij.codeInsight.daemon.impl.LineMarkersPass.collectLineMarkersForInjected(LineMarkersPass.java:206)
	at com.intellij.codeInsight.daemon.impl.SlowLineMarkersPass.doCollectInformation(SlowLineMarkersPass.java:66)
	at com.intellij.codeHighlighting.TextEditorHighlightingPass.collectInformation(TextEditorHighlightingPass.java:61)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1$1.run(PassExecutorService.java:350)
	at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1049)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1.run(PassExecutorService.java:342)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:218)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.a(PassExecutorService.java:340)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.run(PassExecutorService.java:316)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:134)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:131)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at com.intellij.concurrency.PrioritizedFutureTask.access$101(PrioritizedFutureTask.java:31)
	at com.intellij.concurrency.PrioritizedFutureTask$1.run(PrioritizedFutureTask.java:70)
	at com.intellij.concurrency.PrioritizedFutureTask.run(PrioritizedFutureTask.java:113)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:680)

java.lang.ClassCastException: com.intellij.psi.impl.source.xml.XmlProcessingInstructionImpl cannot be cast to com.intellij.psi.xml.XmlAttribute
	at org.kohsuke.stapler.idea.JellyLanguageInjector.getLanguagesToInject(JellyLanguageInjector.java:34)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider$MyInjProcessor.process(InjectedPsiCachedValueProvider.java:81)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageManagerImpl.processInPlaceInjectorsFor(InjectedLanguageManagerImpl.java:432)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider.doCompute(InjectedPsiCachedValueProvider.java:61)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.a(InjectedLanguageUtil.java:225)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.enumerate(InjectedLanguageUtil.java:143)
	at com.intellij.codeInsight.daemon.impl.LineMarkersPass.collectLineMarkersForInjected(LineMarkersPass.java:206)
	at com.intellij.codeInsight.daemon.impl.SlowLineMarkersPass.doCollectInformation(SlowLineMarkersPass.java:66)
	at com.intellij.codeHighlighting.TextEditorHighlightingPass.collectInformation(TextEditorHighlightingPass.java:61)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1$1.run(PassExecutorService.java:350)
	at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1049)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1.run(PassExecutorService.java:342)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:218)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.a(PassExecutorService.java:340)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.run(PassExecutorService.java:316)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:134)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:131)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at com.intellij.concurrency.PrioritizedFutureTask.access$101(PrioritizedFutureTask.java:31)
	at com.intellij.concurrency.PrioritizedFutureTask$1.run(PrioritizedFutureTask.java:70)
	at com.intellij.concurrency.PrioritizedFutureTask.run(PrioritizedFutureTask.java:113)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:680)

java.lang.ClassCastException: com.intellij.psi.impl.source.xml.XmlProcessingInstructionImpl cannot be cast to com.intellij.psi.xml.XmlAttribute
	at org.kohsuke.stapler.idea.JellyLanguageInjector.getLanguagesToInject(JellyLanguageInjector.java:34)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider$MyInjProcessor.process(InjectedPsiCachedValueProvider.java:81)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageManagerImpl.processInPlaceInjectorsFor(InjectedLanguageManagerImpl.java:432)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider.doCompute(InjectedPsiCachedValueProvider.java:61)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.a(InjectedLanguageUtil.java:225)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.enumerate(InjectedLanguageUtil.java:143)
	at com.intellij.codeInsight.daemon.impl.LineMarkersPass.collectLineMarkersForInjected(LineMarkersPass.java:206)
	at com.intellij.codeInsight.daemon.impl.SlowLineMarkersPass.doCollectInformation(SlowLineMarkersPass.java:66)
	at com.intellij.codeHighlighting.TextEditorHighlightingPass.collectInformation(TextEditorHighlightingPass.java:61)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1$1.run(PassExecutorService.java:350)
	at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1049)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1.run(PassExecutorService.java:342)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:218)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.a(PassExecutorService.java:340)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.run(PassExecutorService.java:316)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:134)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:131)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at com.intellij.concurrency.PrioritizedFutureTask.access$101(PrioritizedFutureTask.java:31)
	at com.intellij.concurrency.PrioritizedFutureTask$1.run(PrioritizedFutureTask.java:70)
	at com.intellij.concurrency.PrioritizedFutureTask.run(PrioritizedFutureTask.java:113)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:680)

java.util.concurrent.ExecutionException: java.lang.ClassCastException: com.intellij.psi.impl.source.xml.XmlProcessingInstructionImpl cannot be cast to com.intellij.psi.xml.XmlAttribute
	at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
	at java.util.concurrent.FutureTask.get(FutureTask.java:83)
	at com.intellij.concurrency.PrioritizedFutureTask.access$301(PrioritizedFutureTask.java:31)
	at com.intellij.concurrency.PrioritizedFutureTask$1.run(PrioritizedFutureTask.java:77)
	at com.intellij.concurrency.PrioritizedFutureTask.run(PrioritizedFutureTask.java:113)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:680)
Caused by: java.lang.ClassCastException: com.intellij.psi.impl.source.xml.XmlProcessingInstructionImpl cannot be cast to com.intellij.psi.xml.XmlAttribute
	at org.kohsuke.stapler.idea.JellyLanguageInjector.getLanguagesToInject(JellyLanguageInjector.java:34)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider$MyInjProcessor.process(InjectedPsiCachedValueProvider.java:81)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageManagerImpl.processInPlaceInjectorsFor(InjectedLanguageManagerImpl.java:432)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider.doCompute(InjectedPsiCachedValueProvider.java:61)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.a(InjectedLanguageUtil.java:225)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.enumerate(InjectedLanguageUtil.java:143)
	at com.intellij.codeInsight.daemon.impl.LineMarkersPass.collectLineMarkersForInjected(LineMarkersPass.java:206)
	at com.intellij.codeInsight.daemon.impl.SlowLineMarkersPass.doCollectInformation(SlowLineMarkersPass.java:66)
	at com.intellij.codeHighlighting.TextEditorHighlightingPass.collectInformation(TextEditorHighlightingPass.java:61)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1$1.run(PassExecutorService.java:350)
	at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1049)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1.run(PassExecutorService.java:342)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:218)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.a(PassExecutorService.java:340)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.run(PassExecutorService.java:316)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:134)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:131)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at com.intellij.concurrency.PrioritizedFutureTask.access$101(PrioritizedFutureTask.java:31)
	at com.intellij.concurrency.PrioritizedFutureTask$1.run(PrioritizedFutureTask.java:70)
	... 4 more

java.lang.ClassCastException: com.intellij.psi.impl.source.xml.XmlProcessingInstructionImpl cannot be cast to com.intellij.psi.xml.XmlAttribute
	at org.kohsuke.stapler.idea.JellyLanguageInjector.getLanguagesToInject(JellyLanguageInjector.java:34)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider$MyInjProcessor.process(InjectedPsiCachedValueProvider.java:81)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageManagerImpl.processInPlaceInjectorsFor(InjectedLanguageManagerImpl.java:432)
	at com.intellij.psi.impl.source.tree.injected.InjectedPsiCachedValueProvider.doCompute(InjectedPsiCachedValueProvider.java:61)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.a(InjectedLanguageUtil.java:225)
	at com.intellij.psi.impl.source.tree.injected.InjectedLanguageUtil.enumerate(InjectedLanguageUtil.java:143)
	at com.intellij.codeInsight.daemon.impl.LineMarkersPass.collectLineMarkersForInjected(LineMarkersPass.java:206)
	at com.intellij.codeInsight.daemon.impl.SlowLineMarkersPass.doCollectInformation(SlowLineMarkersPass.java:66)
	at com.intellij.codeHighlighting.TextEditorHighlightingPass.collectInformation(TextEditorHighlightingPass.java:61)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1$1.run(PassExecutorService.java:350)
	at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1049)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass$1.run(PassExecutorService.java:342)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:218)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.a(PassExecutorService.java:340)
	at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.run(PassExecutorService.java:316)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:134)
	at com.intellij.concurrency.JobUtil$3.call(JobUtil.java:131)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at com.intellij.concurrency.PrioritizedFutureTask.access$101(PrioritizedFutureTask.java:31)
	at com.intellij.concurrency.PrioritizedFutureTask$1.run(PrioritizedFutureTask.java:70)
	at com.intellij.concurrency.PrioritizedFutureTask.run(PrioritizedFutureTask.java:113)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:680)
Merge pull request #1 from stephenc/master

Fix ClassCastException