[Kryonet] NoClassDefFoundError with Kryonet

Hello Community,

I have a mixed problem with Kryonet and Android. I try to connect to a server with a Kryo Client in a Android Service. But if I try to create a simple Client , I get following Exception.

05-26 16:23:07.722: E/AndroidRuntime(24686): FATAL EXCEPTION: IntentService[SendSMSService]
05-26 16:23:07.722: E/AndroidRuntime(24686): java.lang.NoClassDefFoundError: com.esotericsoftware.kryonet.Client
05-26 16:23:07.722: E/AndroidRuntime(24686): at cronos.dev.smsforward.smartphone.SendSMSService.onHandleIntent(SendSMSService.java:40)
05-26 16:23:07.722: E/AndroidRuntime(24686): at android.app.IntentService$ServiceHandler.handleMessage(IntentService.java:65)
05-26 16:23:07.722: E/AndroidRuntime(24686): at android.os.Handler.dispatchMessage(Handler.java:99)
05-26 16:23:07.722: E/AndroidRuntime(24686): at android.os.Looper.loop(Looper.java:137)
05-26 16:23:07.722: E/AndroidRuntime(24686): at android.os.HandlerThread.run(HandlerThread.java:60)
05-26 16:23:08.783: E/ActivityThread(24686): Activity cronos.dev.smsforward.smartphone.SMSForwardSmartphone has leaked IntentReceiver cronos.dev.smsforward.smartphone.SmsReceiver@420ae3c0 that was originally registered here. Are you missing a call to unregisterReceiver()?
05-26 16:23:08.783: E/ActivityThread(24686): android.app.IntentReceiverLeaked: Activity cronos.dev.smsforward.smartphone.SMSForwardSmartphone has leaked IntentReceiver cronos.dev.smsforward.smartphone.SmsReceiver@420ae3c0 that was originally registered here. Are you missing a call to unregisterReceiver()?
05-26 16:23:08.783: E/ActivityThread(24686): at android.app.LoadedApk$ReceiverDispatcher.(LoadedApk.java:795)
05-26 16:23:08.783: E/ActivityThread(24686): at android.app.LoadedApk.getReceiverDispatcher(LoadedApk.java:596)
05-26 16:23:08.783: E/ActivityThread(24686): at android.app.ContextImpl.registerReceiverInternal(ContextImpl.java:1316)
05-26 16:23:08.783: E/ActivityThread(24686): at android.app.ContextImpl.registerReceiver(ContextImpl.java:1296)
05-26 16:23:08.783: E/ActivityThread(24686): at android.app.ContextImpl.registerReceiver(ContextImpl.java:1290)
05-26 16:23:08.783: E/ActivityThread(24686): at android.content.ContextWrapper.registerReceiver(ContextWrapper.java:423)
05-26 16:23:08.783: E/ActivityThread(24686): at cronos.dev.smsforward.smartphone.SMSForwardSmartphone.onClick(SMSForwardSmartphone.java:79)
05-26 16:23:08.783: E/ActivityThread(24686): at android.view.View.performClick(View.java:4204)
05-26 16:23:08.783: E/ActivityThread(24686): at android.view.View$PerformClick.run(View.java:17355)
05-26 16:23:08.783: E/ActivityThread(24686): at android.os.Handler.handleCallback(Handler.java:725)
05-26 16:23:08.783: E/ActivityThread(24686): at android.os.Handler.dispatchMessage(Handler.java:92)
05-26 16:23:08.783: E/ActivityThread(24686): at android.os.Looper.loop(Looper.java:137)
05-26 16:23:08.783: E/ActivityThread(24686): at android.app.ActivityThread.main(ActivityThread.java:5041)
05-26 16:23:08.783: E/ActivityThread(24686): at java.lang.reflect.Method.invokeNative(Native Method)
05-26 16:23:08.783: E/ActivityThread(24686): at java.lang.reflect.Method.invoke(Method.java:511)
05-26 16:23:08.783: E/ActivityThread(24686): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
05-26 16:23:08.783: E/ActivityThread(24686): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
05-26 16:23:08.783: E/ActivityThread(24686): at dalvik.system.NativeStart.main(Native Method)

If I remove every Kryonet code, the App runs perfect. Can somebody help me?

Check the KryoNet JAR on the Android project export settings.

Yes, I allready done. Do you have antoher idea?