Cannot get the value of write-only property 'runProguard' with Gradle plugin 0.14.0 and Android Studio 0.9.0

Question

After downloading Android Studio 0.9.0 and after having it update the Gradle plugin to 0.14.0 I keep getting the following error whenever I try to build:

Error:Cannot get the value of write-only property 'runProguard'

Below is the buildTypes from my Build.gradle. I've tried deleting all of the proguard related lines and resyncing but nothing works. How can I get this error to go away?

buildTypes {
    release {
        debuggable false
        signingConfig signingConfigs.release
        //runProguard true
        //proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
    }
    debug {
        debuggable true
        signingConfig signingConfigs.debug
        //runProguard false
        //proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
    }
}

Answer 1

Apparently it was a problem with the Crashlytics/Fabric plugin. Update to version 1.14.3 in your dependencies classpath and it should work.

Source: https://plus.google.com/+AndroidDevelopers/posts/gvBK7fkYsR7

Answer 2

You don't need to update to Fabric if you don't want, just update your crashlytics version to 1.14.3:

buildscript {
    repositories {
        maven { url 'http://download.crashlytics.com/maven' }
    }

    dependencies {
        classpath 'com.crashlytics.tools.gradle:crashlytics-gradle:1.14.3'
    }
}