Android - Proguard double zip erreur de saisie - Android Support Library

Je suis en train d'utiliser Proguard dans un application android qui utilise android de projets de bibliothèque.
Mon core android projet dépend de deux android bibliothèque de projets. Le noyau et la bibliothèque de projets ont des dépendances sur android support library (dans mon cas: android-support-v4.jar).
Quand j'essaie de le dissimuler avec ProGuard, puis je reçois toujours le message d'erreur suivant (Si le Proguarg est désactivé dans le Gradle script, puis de la compilation fonctionne très bien.):

:MYANDROIDPROJECT:proguardDemoRelease FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':MYANDROIDPROJECT:proguardDemoRelease'.
> java.io.IOException: Can't write [MYANDROIDPROJECT_PATH\build\intermediates\classes-proguard\demo\release\classes.jar] (Can't read [MYANDROIDPROJECT_PATH\build\intermediates\exploded-aar\com.android.support\support-v41.0.3\classes.jar(;;;;;;!META-INF/MANIFEST.MF)] (Duplicate zip entry [classes.jar:android/support/v4/graphics/drawable/DrawableCompat$HoneycombDrawableImpl.class]))

Le script de build Gradle pour mon projet de base:

buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:0.12.2+'
}
}
apply plugin: 'android'
android {
buildToolsVersion "19.1.0"
compileSdkVersion 19
lintOptions {
abortOnError false
}
signingConfigs {
localks {
storeFile file("keystore/keystore")
storePassword "xx"
keyAlias "xx"
keyPassword "xx"
}
}
buildTypes {
debug {
debuggable true
runProguard false       
zipAlign true
signingConfig signingConfigs.localks
}
release {
debuggable false   
zipAlign true
proguardFile 'proguard.txt'
runProguard true        
signingConfig signingConfigs.localks
}
}
defaultConfig {
minSdkVersion 14
targetSdkVersion 19
ndk{
moduleName "S3DClient"
abiFilter "armeabi-v7a"
stl "gnustl_static"
}
}
sourceSets {
main {
manifest.srcFile 'src/main/AndroidManifest.xml'
java.srcDirs = ['src/main/java']
resources.srcDirs = ['src/main/java']
aidl.srcDirs = ['src/main/java']
renderscript.srcDirs = ['src/main/java']
res.srcDirs = ['src/main/res']
assets.srcDirs = ['src/main/assets']
jni.srcDirs = []
}
paid {
manifest.srcFile 'src/paid/AndroidManifest.xml'
java.srcDirs = ['src/paid/java']
res.srcDirs = ['src/paid/res']
jni.srcDirs = []
}
demo {
manifest.srcFile 'src/demo/AndroidManifest.xml'
java.srcDirs = ['src/demo/java']
res.srcDirs = ['src/demo/res']
jni.srcDirs = []
}
}
productFlavors {
paid {
applicationId = "hu.myprojectpackage1"
}
demo {
applicationId = "hu.myprojectpackage2"
}
}
}
dependencies {
compile files('src/main/libs/sqliteassethelper-2.0.1.jar',
'src/main/libs/S3DXAndroidTools.jar',
'src/main/libs/roboguice-2.0.jar',
'src/main/libs/open-javageom.jar',
'src/main/libs/openawt.geom.jar',
'src/main/libs/libGoogleAnalyticsServices.jar',
'src/main/libs/javax.inject-1.jar',
'src/main/libs/guice-3.0-no_aop.jar',
'src/main/libs/commons-lang3-3.1.jar',
'src/main/libs/bugsense-3.6.jar')
compile fileTree(dir: "$buildDir/native-libs", include: '*.jar')
compile 'com.android.support:support-v4:21.0.+'
compile project(":lib/SlidingLayer")
compile project(':lib/BlutoothCommunicationHandler') 
paidCompile project(':lib/Licencing')
}

Le script de build Gradle pour l'un des projets de la bibliothèque:

apply plugin: 'android-library'
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:0.12.2+'
}
}
dependencies {
compile "com.android.support:support-v4:19.0.+"
}
android {
buildToolsVersion "19.1.0"
compileSdkVersion 19
defaultConfig {
minSdkVersion 4
targetSdkVersion 18
}
dexOptions {
preDexLibraries = false
}
lintOptions {
abortOnError false
}
sourceSets {
main {
manifest.srcFile 'AndroidManifest.xml'
java.srcDirs = ['src']
resources.srcDirs = ['src']
res.srcDirs = ['res']
}
}
}

L' (partie) de ProGuard config est:

-libraryjars src/main/libs/android-support-v4.jar
-keep class android.** { *; }
-keep class android.support** { *; }
-dontnote
-repackageclasses ''
-allowaccessmodification
-optimizations !code/simplification/arithmetic
-keepattributes *Annotation*
-dontwarn org.openawt.**
-dontwarn android.support.**
-optimizationpasses 5
-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-dontpreverify
-verbose
-assumenosideeffects class android.util.Log {
public static *** e(...);
public static *** w(...);
public static *** wtf(...);
public static *** d(...);
public static *** v(...);
}
-keepattributes Signature
-keepattributes *Annotation*

OriginalL'auteur BertZ | 2015-02-13