Mi código de facturación en la aplicación funcionaba bien hasta que actualicé a Android L Dev Preview. Ahora recibo este error cuando se inicia mi aplicación. ¿Alguien sabe qué ha cambiado acerca de L que causa esto o cómo debo cambiar mi código para solucionarlo?

android {
compileSdkVersion 'android-L'
buildToolsVersion '20'
defaultConfig {
    minSdkVersion 13
    targetSdkVersion 'L'
...
...


compile 'com.google.android.gms:play-services:5.+'
compile 'com.android.support:support-v13:21.+'
compile 'com.android.support:appcompat-v7:21.+'
...
...

El error cuando se inicia la aplicación:

06-29 16:22:33.281    5719-5719/com.tbse.wnswfree D/AndroidRuntime﹕ Shutting down VM
06-29 16:22:33.284    5719-5719/com.tbse.wnswfree E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.tbse.wnswfree, PID: 5719
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.tbse.wnswfree/com.tbse.wnswfree.InfoPanel}: java.lang.IllegalArgumentException: Service Intent must be explicit: Intent { act=com.android.vending.billing.InAppBillingService.BIND }
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2255)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2317)
        at android.app.ActivityThread.access$800(ActivityThread.java:143)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1258)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:135)
        at android.app.ActivityThread.main(ActivityThread.java:5070)
        at java.lang.reflect.Method.invoke(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:372)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:836)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:631)
 Caused by: java.lang.IllegalArgumentException: Service Intent must be explicit: Intent { act=com.android.vending.billing.InAppBillingService.BIND }
        at android.app.ContextImpl.validateServiceIntent(ContextImpl.java:1603)
        at android.app.ContextImpl.bindServiceCommon(ContextImpl.java:1702)
        at android.app.ContextImpl.bindService(ContextImpl.java:1680)
        at android.content.ContextWrapper.bindService(ContextWrapper.java:528)
        at com.tbse.wnswfree.util.IabHelper.startSetup(IabHelper.java:262)
        at com.tbse.wnswfree.InfoPanel.onStart(InfoPanel.java:709)
        at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1217)
        at android.app.Activity.performStart( Activity.java:5736)
        at android.app.ActivityThread.performLaunchActivity( ActivityThread.java:2218)
        at android.app.ActivityThread.handleLaunchActivity( ActivityThread.java:2317)
        at android.app.ActivityThread.access$800( ActivityThread.java:143)
        at android.app.ActivityThread$H.handleMessage( ActivityThread.java:1258)
        ...

Línea 709 en InfoPanel.java:

        mHelper.startSetup(new IabHelper.OnIabSetupFinishedListener() {
          @Override
          public void onIabSetupFinished(IabResult result) {
            ...