ActionBar Sherlock with Android Studio 0.2.2

I am developing a demo app using ActionBar Sherlock and Android Studio. Android Studio Version is 0.2.2, gradle version is 1.6 and plugin version is 0.5.1 and i am following these tutorials :- www.grokkingandroid.com showlabor.blogspot.ca i am getting following error :- ``` Gradle: Execution failed for task ':libraries:ActionBarSherlock:actionbarsherlock:compileReleaseAidl'.tried to access class com.android.build.gradle.internal.tasks.DependencyBasedCompileTask$DepFileProcessor from class com.android.build.gradle.internal.tasks.DependencyBasedCompileTask ``` actionbarsherlock build.gradle file goes like this :- ``` buildscript { repositories { mavenCentral() } dependencies { classpath 'com.android.tools.build:gradle:0.5.+' } } apply plugin: 'android-library' dependencies { compile 'com.android.support:support-v4:18.0.+' } android { compileSdkVersion 17 buildToolsVersion '17.0.0' defaultConfig { minSdkVersion 7 targetSdkVersion 16 } sourceSets { main { manifest.srcFile 'AndroidManifest.xml' java.srcDirs = ['src'] resources.srcDirs = ['src'] aidl.srcDirs = ['src'] renderscript.srcDirs = ['src'] res.srcDirs = ['res'] assets.srcDirs = ['assets'] } instrumentTest.setRoot('tests') } } ``` and my project build file goes like this :- ``` buildscript { repositories { mavenCentral() } dependencies { classpath 'com.android.tools.build:gradle:0.5.+' } } apply plugin: 'android' repositories { mavenCentral() } dependencies { compile 'com.android.support:support-v4:13.0.+' } dependencies { compile project(':libraries:ActionBarSherlock:actionbarsherlock') } android { compileSdkVersion 17 buildToolsVersion "17.0.0" defaultConfig { minSdkVersion 7 targetSdkVersion 16 } } ``` any leads on this is highly appreciated Thanks :)