I installed Android Studio 0.1.9. Today I got and update to version 0.2 and of course I updated. After the installation I restarted Android Studio but now I get this messag
Open your root build.gradle file and change Gradle version like this
build.gradle
Old version:
dependencies { classpath 'com.android.tools.build:gradle:1.3.0' }
New version:
dependencies { classpath 'com.android.tools.build:gradle:1.5.0' }
For Gradle version compatibility see this.