java.lang.RuntimeException: Unbalanced tree. Most probably caused by unbalanced markers. Try calling setDebugMode(true) against PsiBuilder passed to identify exact location of the problem
	at com.intellij.lang.impl.PsiBuilderImpl.c(PsiBuilderImpl.java:44)
	at com.intellij.lang.impl.PsiBuilderImpl.a(PsiBuilderImpl.java:107)
	at com.intellij.lang.impl.PsiBuilderImpl.a(PsiBuilderImpl.java:164)
	at com.intellij.lang.impl.PsiBuilderImpl.a(PsiBuilderImpl.java:164)
	at com.intellij.lang.impl.PsiBuilderImpl.a(PsiBuilderImpl.java:164)
	at com.intellij.lang.impl.PsiBuilderImpl.a(PsiBuilderImpl.java:164)
	at com.intellij.lang.impl.PsiBuilderImpl.a(PsiBuilderImpl.java:164)
	at com.intellij.lang.impl.PsiBuilderImpl.a(PsiBuilderImpl.java:164)
	at com.intellij.lang.impl.PsiBuilderImpl.a(PsiBuilderImpl.java:5)
	at com.intellij.lang.impl.PsiBuilderImpl.getTreeBuilt(PsiBuilderImpl.java:145)
	at org.jetbrains.plugins.scala.lang.parser.ScalaParser.parse(ScalaParser.scala:17)
	at com.intellij.psi.tree.IChameleonElementType.parseContents(IChameleonElementType.java:64)
	at com.intellij.psi.impl.source.tree.ChameleonElement.transform(ChameleonElement.java:4)
	at com.intellij.psi.impl.source.parsing.ChameleonTransforming.transformNoLock(ChameleonTransforming.java:13)
	at com.intellij.psi.impl.source.parsing.ChameleonTransforming.transform(ChameleonTransforming.java:23)
	at com.intellij.psi.impl.source.parsing.ChameleonTransforming.transformChildren(ChameleonTransforming.java:33)
	at com.intellij.psi.impl.source.parsing.ChameleonTransforming.transformChildren(ChameleonTransforming.java:40)
	at com.intellij.psi.impl.source.tree.CompositeElement.countChildren(CompositeElement.java:156)
	at com.intellij.psi.impl.source.tree.CompositeElement.getChildrenAsPsiElements(CompositeElement.java:157)
	at com.intellij.psi.impl.source.PsiFileImpl.getChildren(PsiFileImpl.java:269)
	at com.intellij.psi.impl.source.PsiFileImpl.findChildByClass(PsiFileImpl.java:216)
	at org.jetbrains.plugins.scala.lang.psi.ScalaFile.findChildByClass(ScalaFile.scala:23)
	at org.jetbrains.plugins.scala.lang.psi.ScalaPsiElement$class.findChild(ScalaPsiElement.scala:48)
	at org.jetbrains.plugins.scala.lang.psi.ScalaFile.findChild(ScalaFile.scala:23)
	at org.jetbrains.plugins.scala.lang.psi.ScalaFile.packageStatement(ScalaFile.scala:42)
	at org.jetbrains.plugins.scala.lang.psi.ScalaFile.getPackageName(ScalaFile.scala:37)
	at org.jetbrains.plugins.scala.caches.info.impl.ScalaInfoFactory.createScalaFileInfo(ScalaInfoFactory.java:71)
	at org.jetbrains.plugins.scala.caches.module.ScalaFilesCacheImpl.createScalaFileInfo(ScalaFilesCacheImpl.java:187)
	at org.jetbrains.plugins.scala.caches.module.ScalaFilesCacheImpl.regenerateFileInfo(ScalaFilesCacheImpl.java:164)
	at org.jetbrains.plugins.scala.caches.module.ScalaFilesCacheImpl.getUp2DateFileInfo(ScalaFilesCacheImpl.java:150)
	at org.jetbrains.plugins.scala.caches.module.ScalaFilesCacheImpl$MyCacheUpdater.processFile(ScalaFilesCacheImpl.java:516)
	at org.jetbrains.plugins.scala.caches.project.ScalaCachesManagerImpl$MyCacheUpdater.processFile(ScalaCachesManagerImpl.java:274)
	at com.intellij.ide.startup.FileSystemSynchronizer.updateFiles(FileSystemSynchronizer.java:191)
	at com.intellij.ide.startup.FileSystemSynchronizer.execute(FileSystemSynchronizer.java:72)
	at com.intellij.ide.startup.impl.StartupManagerImpl$2.run(StartupManagerImpl.java:9)
	at com.intellij.openapi.application.impl.ApplicationImpl.runReadAction(ApplicationImpl.java:344)
	at com.intellij.ide.startup.impl.StartupManagerImpl.runStartupActivities(StartupManagerImpl.java:43)
	at com.intellij.openapi.project.impl.ProjectManagerImpl$2.run(ProjectManagerImpl.java:1)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl$3.run(ProgressManagerImpl.java:3)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl$4.run(ProgressManagerImpl.java:2)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl$2.run(ProgressManagerImpl.java:6)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:101)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.runProcess(ProgressManagerImpl.java:9)
	at com.intellij.openapi.application.impl.ApplicationImpl$7$1.run(ApplicationImpl.java:15)
	at com.intellij.openapi.application.impl.ApplicationImpl$5.run(ApplicationImpl.java:7)
	at java.util.concurrent.Executors$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:613)
	at com.intellij.openapi.application.impl.ApplicationImpl$1$1.run(ApplicationImpl.java:9)