I am trying to build my first Google Glass app, using Android Studio 0.5.4. But am getting a build error: Error:Module 'TestApplication-TestApplication': platform 'Google Inc.:Glass Development Kit Sneak Peek:15' not found.

As you can see the GDK, and all necessary library files are installed.

I have looked at a few different questions about this already, primarily
- Google Glass: GDK with Android Studio
 - Android Studio || GDK 'hello word' || import com.google.android.glass.app.Card || Cannot Resolve Symbol 'google'
 - Error:Module 'App name': platform 'android-15' not found
 
Which recommends to change compileSdkVersion in the build.gradle to this
apply plugin: 'android'
android {
    compileSdkVersion "Google Inc.:Glass Development Kit Sneak Peek:15"
    buildToolsVersion "17.0.0"
    defaultConfig {
        minSdkVersion 15
        targetSdkVersion 15
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            runProguard false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
        }
    }
}
dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
}
