Android Studio Could not find method runProguard() for arguments?

I had the same problem after updating android studio to 1.0 RC 3.
I couldn’t import my project to new version. i had to create a new project and add the files to the new project from the previous project manually.

After that I found a change in the gradle build file.

Here is the change:

buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}

Instead of “runProguard false” use “minifyEnabled false”