Gradle assembleDebug of an Android project fails with aapt error

Question

I'm trying to establish a gradle build for an Android library project, but currently the build fails during processDebugRes with an aapt error:

:packageDebugAidl UP-TO-DATE
:packageDebugRes UP-TO-DATE
:prepareDebugDependencies UP-TO-DATE
:processDebugManifest UP-TO-DATE
:processDebugRes
ERROR: Unknown option '--output-text-symbols'
Android Asset Packaging Tool

Usage:
 aapt l[ist] [-v] [-a] file.{zip,jar,apk}
   List contents of Zip-compatible archive.

(...)

:processDebugRes FAILED

FAILURE: Build failed with an exception.

The build.gradle is pretty simple and looks like this:

buildscript {

    repositories { mavenCentral() }
    dependencies { classpath 'com.android.tools.build:gradle:0.1' }
}

apply plugin: 'android-library'

dependencies {

    compile fileTree(dir: 'libs', include: '*.jar')
}

android {

    target = 'android-16'

    defaultConfig {

        versionCode = 16
        versionName = "1.0"
        minSdkVersion = 8
    }
}

BTW, the aapt version is 0.2.

I'm new to the whole Gradle thing, so thanks in advance for any pointers on how to solve this problem.

Solution

Finally found the problem on my own - I was using revision 14 of the Android SDK platform tools, not the preview of revision 15, which is required according to http://tools.android.com/tech-docs/new-build-system/using-the-new-build-system.