title: EmptyThrowable error in Android Studio's Run
body: <p>I'm trying to run my App through Android Studio, but I'm receiving next error:</p>
  
  <pre><code>13:02:50 EmptyThrowable
       Invalid stub element type in index:
       file: file://C:/Users/d_mas/AppData/Local/Android/sdk/sources/android-25/java/util/Calendar.java
       psiElement: PsiImportList
       requiredClass: interface com.intellij.psi.PsiClass
       actualClass: class com.intellij.psi.impl.source.PsiImportListImpl
       virtualFile: size:106178; stamp:0; modCount:1499594398217; fileType:JAVA; language:JAVA
       document: size:106178; stamp:0; committed:true; saved:true
       psiFile: size:106178; stamp:0; class:com.intellij.psi.impl.source.PsiJavaFileImpl; language:JAVA
       stubInfo: created in getStubTree(); with backReference
       indexing info: no data
  </code></pre>
  
  <p>The Compile SDK Version is 25, Build Tools Version 25.0.3, MinSdk Version 15 and compile 'com.android.support:appcompat-v7:25.0.0'. I'm using the JDK 1.8.</p>