error while importing stackblue into Android Studio project

Question

I'm trying to import and add android stackblur into a android studio project, but it is missing the ScriptC_blur class.

I also added the following values to build.gradle for android gradle plugin v0.14.1. However, it doesn't resolve the issue

android {
    compileSdkVersion 21
    buildToolsVersion '21.1.0'

    defaultConfig {
        ...
        minSdkVersion 11
        targetSdkVersion 21
        renderscriptTargetApi 19
        renderscriptSupportModeEnabled true

    }
    ...
    dependencies {
        ...
        compile files('libs/renderscript-v8.jar')
        ...
    }
}

I also followed this thread, but I had no luck to get it to work. Any advice and suggestions will be greatly appreciated