title: Finished with Non Zero Exit Value 3
body: <p>I am trying to run my project, but I keep getting this error:</p>
  
  <blockquote>
    <p>Error:Execution failed for task ':app:preDexDebug'.
    com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command '/Library/Java/JavaVirtualMachines/jdk1.8.0_25.jdk/Contents/Home/bin/java'' finished with non-zero exit value 3</p>
  </blockquote>
  
  <p>This is my gradle:</p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  android {
  compileSdkVersion 21
  buildToolsVersion "21.1.2"
  
  defaultConfig {
      applicationId "com.blume.android"
      minSdkVersion 14
      targetSdkVersion 21
      versionCode 1
      versionName "1.0"
  }
  
  buildTypes {
      release {
          minifyEnabled false
          proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
      }
  }
  }
  
  dependencies {
  compile fileTree(dir: 'libs', include: ['*.jar'])
  compile project(path: ':endpoints-backend', configuration: 'android-endpoints')
  compile 'com.android.support:appcompat-v7:21.0.3'
  compile 'com.google.android.gms:play-services:6.5.87'
  compile project(path: ':cloud-backend', configuration: 'android-endpoints')
  compile 'javax.persistence:persistence-api:1.0'
  compile project(':endpoints-backend')
  }
  </code></pre>
  
  <p>All Help is appreciated.</p>