title: can't compile Android app with realm
body: <p>When I add the realm.io library to my Android app and try to run the app, I get this error during compilation:</p>
  
  <p>Error:Execution failed for task ':compileDebugJava'. > java.lang.ClassCastException:     com.sun.tools.javac.code.Symbol$ClassSymbol cannot be cast to javax.lang.model.element.PackageElement</p>
  
  <p>This is my build.gradle:</p>
  
  <pre><code>buildscript {
  repositories {
      mavenCentral()
      maven { url 'http://download.crashlytics.com/maven' }
  }
  dependencies {
      classpath 'com.android.tools.build:gradle:0.13.2'
      classpath 'com.crashlytics.tools.gradle:crashlytics-gradle:1.+'
      classpath 'com.jakewharton.hugo:hugo-plugin:1.1.0'
  }
  }
  
  apply plugin: 'android'
  apply plugin: 'crashlytics'
  apply plugin: 'com.android.application'
  apply plugin: 'hugo'
  
  repositories {
  mavenCentral()
  jcenter()
  maven { url 'http://download.crashlytics.com/maven' }
  }
  
  android {
  compileSdkVersion 19
  buildToolsVersion '19.1'
  
  defaultConfig {
      minSdkVersion 14
      targetSdkVersion 19
  }
  
  buildTypes {
      release {
          runProguard false
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
      }
  }
  
  packagingOptions {
      exclude 'META-INF/LICENSE.txt'
      exclude 'META-INF/NOTICE.txt'
      exclude 'META-INF/DEPENDENCIES'
      exclude 'META-INF/LICENSE'
      exclude 'META-INF/NOTICE'
  }
  
  dexOptions {
          jumboMode = true
  }
  
  /*sourceSets {
      main {
          manifest.srcFile 'src/main/AndroidManifest.xml'
          java.srcDirs = ['src/main/java', 'src-gen/main/java']
          resources.srcDirs = ['src']
          aidl.srcDirs = ['src']
          renderscript.srcDirs = ['src']
          res.srcDirs = ['res']
          assets.srcDirs = ['assets']
      }
  }*/
  }
  
  dependencies
      {
          compile project(':libraries:AndroidBootstrap')
          compile 'com.android.support:appcompat-v7:19.+'
          compile 'com.crashlytics.android:crashlytics:1.+'
          compile files('libs/naga-3_0.jar')
          compile files('libs/branch-1.1.1.jar')
          compile 'com.google.code.gson:gson:2.2.4'
          compile 'com.viewpagerindicator:library:2.4.1@aar'
          compile 'com.google.android.gms:play-services:5.0.89'
          compile 'de.greenrobot:eventbus:2.2.1'
          compile 'com.github.kevinsawicki:http-request:5.6'
          compile 'com.maxmind.geoip2:geoip2:0.9.0'
          compile 'com.squareup.retrofit:retrofit:1.4.1'
          compile 'com.squareup.picasso:picasso:2.3.4'
          compile 'de.hdodenhof:circleimageview:1.2.0'
          compile 'com.helpshift:android-aar:3.6.0'
          compile 'io.realm:realm-android:0.73.1'
          compile project(':facebook')
          repositories { maven { url 'https://oss.sonatype.org/content/repositories/snapshots/' } }
          compile('com.segment.analytics.android:core:2.4.1@aar')
          {
              transitive = true
          }
      }
  </code></pre>
  
  <p>When I remove the realm dependency and code, the app compiles fine.  I'm running Android Studio  0.8.14</p>