I get this error while executing.
 com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command '/usr/lib/jvm/java-8-oracle/bin/java'' finished with non-zero exit value 2
This is my Dependency
 dependencies {
    compile files('libs/FlurryAnalytics-5.0.0.jar')
    compile files('libs/YouTubeAndroidPlayerApi.jar')
    compile files('libs/httpcore-4.3.jar')
    compile files('libs/httpmime-4.3.1.jar')
    compile files('libs/ima-android-sdk-beta9.jar')
    compile files('libs/twitter4j-core-3.0.4.jar')
    compile files('libs/universal-image-loader-1.9.0-with-   sources.jar')
    compile files('libs/appsee.jar')
    compile project(':facebookLibrary')
    compile project(':vASTSampleLib')
    compile ('com.google.android.gms:play-services-plus:7.0.0')
    compile ('com.google.android.gms:play-services-analytics:7.0.0')
}
I have Facebook Library and the dependency
dependencies {
   compile project(':facebookSDK')     
   compile 'com.android.support:appcompat-v7:21.0.3'
}
And finally the Facebook SDK
 dependencies {
   compile 'com.android.support:support-v4:21.0.3'
   compile files('libs/bolts-android-1.1.2.jar')
 }
So there is no duplicate.jar files used. Why do I get Dex Error.
