我导出了android应用程序（在Eclipse中）并收到以下错误：
[2016-07-31 09:21:57 - EnglishPhonics] Proguard returned with error code 1. See console
[2016-07-31 09:21:57 - EnglishPhonics] Warning: com.google.android.gms.internal.zzig: can't find referenced class android.security.NetworkSecurityPolicy
[2016-07-31 09:21:57 - EnglishPhonics] Warning: com.google.android.gms.internal.zzig: can't find referenced class android.security.NetworkSecurityPolicy
[2016-07-31 09:21:57 - EnglishPhonics] Warning: com.google.android.gms.internal.zzig: can't find referenced class android.security.NetworkSecurityPolicy
[2016-07-31 09:21:57 - EnglishPhonics] You should check if you need to specify additional program jars.
[2016-07-31 09:21:57 - EnglishPhonics] Warning: there were 3 unresolved references to classes or interfaces.
[2016-07-31 09:21:57 - EnglishPhonics] You may need to specify additional library jars (using '-libraryjars').
[2016-07-31 09:21:57 - EnglishPhonics] java.io.IOException: Please correct the above warnings first.
[2016-07-31 09:21:57 - EnglishPhonics] at proguard.Initializer.execute(Initializer.java:321)
[2016-07-31 09:21:57 - EnglishPhonics] at proguard.ProGuard.initialize(ProGuard.java:211)
[2016-07-31 09:21:57 - EnglishPhonics] at proguard.ProGuard.execute(ProGuard.java:86)
[2016-07-31 09:21:57 - EnglishPhonics] at proguard.ProGuard.main(ProGuard.java:492)
我使用最新版本的Google结算服务。有谁知道如何解决这个问题？