com.intellij.psi.impl.file.PsiBinaryFileImpl
java.lang.ClassCastException: com.intellij.psi.impl.file.PsiBinaryFileImpl
	at com.intellij.psi.stubs.StubIndexImpl$1.perform(StubIndexImpl.java:159)
	at com.intellij.psi.stubs.StubIndexImpl$1.perform(StubIndexImpl.java:156)
	at com.intellij.util.indexing.ValueContainer.forEach(ValueContainer.java:40)
	at com.intellij.psi.stubs.StubIndexImpl.get(StubIndexImpl.java:155)
	at org.jetbrains.plugins.ruby.ruby.actions.RubyGotoClassContributor.getItemsByName(RubyGotoClassContributor.java:27)
	at com.intellij.ide.util.gotoByName.ContributorsBasedGotoByModel.getElementsByName(ContributorsBasedGotoByModel.java:93)
	at com.intellij.ide.util.gotoByName.ChooseByNameBase$CalcElementsThread.addElementsByPattern(ChooseByNameBase.java:1064)
	at com.intellij.ide.util.gotoByName.ChooseByNameBase$CalcElementsThread.access$2400(ChooseByNameBase.java:962)
	at com.intellij.ide.util.gotoByName.ChooseByNameBase$CalcElementsThread$1.run(ChooseByNameBase.java:989)
	at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:671)
	at com.intellij.ide.util.gotoByName.ChooseByNameBase$CalcElementsThread.run(ChooseByNameBase.java:1003)
	at com.intellij.openapi.application.impl.ApplicationImpl$5.run(ApplicationImpl.java:298)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:417)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269)
	at java.util.concurrent.FutureTask.run(FutureTask.java:123)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
	at java.lang.Thread.run(Thread.java:595)
	at com.intellij.openapi.application.impl.ApplicationImpl$1$1.run(ApplicationImpl.java:106)