You are using Gradle version 1.6, which is not supported. Please use version 1.9.
Please point to a supported Gradle version in the project's Gradle settings or in the project's Gradle wrapper (if applicable.)

You are using Gradle version 1.8, which is not supported. Please use version 1.9.
Please point to a supported Gradle version in the project's Gradle settings or in the project's Gradle wrapper (if applicable.)

Gradle version 1.6 is required. Current version is 1.9.
Please fix the project's Gradle settings.

buildscript {
    repositories {
      mavenCentral()
    }
   dependencies {
      classpath 'com.android.tools.build:gradle:0.7.+'
   }
}

distributionUrl=http://services.gradle.org/distributions/gradle-1.9-bin.zip