混淆打包错误！！怎么解决？？？

Question

[2012-05-12 13:57:18 - search4] Proguard returned with error code 1. See console
[2012-05-12 13:57:18 - search4] Note: there were 46 duplicate class definitions.
[2012-05-12 13:57:18 - search4] Warning: com.google.ads.util.g: can't find referenced method 'void setLayerType(int,android.graphics.Paint)' in class android.view.View
[2012-05-12 13:57:18 - search4] Warning: com.google.ads.util.g: can't find referenced method 'void setDisplayZoomControls(boolean)' in class android.webkit.WebSettings
[2012-05-12 13:57:18 - search4] Warning: com.google.ads.util.g$b: can't find referenced class android.webkit.WebResourceResponse
[2012-05-12 13:57:18 - search4] Warning: com.google.ads.util.g$b: can't find referenced class android.webkit.WebResourceResponse
[2012-05-12 13:57:18 - search4] Warning: com.google.ads.util.g$b: can't find referenced method 'android.webkit.WebResourceResponse shouldInterceptRequest(android.webkit.WebView,java.lang.String)' in class com.google.ads.internal.i
[2012-05-12 13:57:18 - search4] Warning: com.google.ads.util.g$b: can't find referenced class android.webkit.WebResourceResponse
[2012-05-12 13:57:18 - search4] Warning: com.google.ads.util.g$b: can't find referenced class android.webkit.WebResourceResponse
[2012-05-12 13:57:18 - search4] Warning: com.l.adlib_android.an: can't find referenced class org.apache.commons.codec.binary.Base64
[2012-05-12 13:57:18 - search4] Warning: com.l.adlib_android.an: can't find referenced class org.apache.commons.codec.binary.Base64
[2012-05-12 13:57:18 - search4] Warning: com.mobisage.android.MobiSageApkService: can't find referenced class android.app.DownloadManager
[2012-05-12 13:57:18 - search4] Warning: com.mobisage.android.MobiSageApkService: can't find referenced class android.app.DownloadManager$Query
[2012-05-12 13:57:18 - search4] Warning: com.mobisage.android.MobiSageApkService: can't find referenced class android.app.DownloadManager$Request
[2012-05-12 13:57:18 - search4] Warning: com.mobisage.android.MobiSageApkService: can't find referenced class android.app.DownloadManager
[2012-05-12 13:57:18 - search4] Warning: com.mobisage.android.MobiSageApkService: can't find referenced class android.app.DownloadManager
[2012-05-12 13:57:18 - search4] Warning: com.mobisage.android.MobiSageApkService: can't find referenced class android.app.DownloadManager$Query
[2012-05-12 13:57:18 - search4] Warning: com.mobisage.android.MobiSageApkService: can't find referenced class android.app.DownloadManager$Query
[2012-05-12 13:57:18 - search4] Warning: com.mobisage.android.MobiSageApkService: can't find referenced class android.app.DownloadManager$Request
[2012-05-12 13:57:18 - search4] Warning: com.mobisage.android.MobiSageApkService: can't find referenced class android.app.DownloadManager$Request
[2012-05-12 13:57:18 - search4] Warning: com.mobisage.android.MobiSageApkService: can't find referenced class android.app.DownloadManager$Request
[2012-05-12 13:57:18 - search4] Warning: com.mobisage.android.MobiSageApkService: can't find referenced class android.app.DownloadManager$Request
[2012-05-12 13:57:18 - search4] Warning: com.mobisage.android.MobiSageApkService: can't find referenced class android.app.DownloadManager$Request
[2012-05-12 13:57:18 - search4] Warning: com.mobisage.android.V: can't find referenced field 'java.lang.String SERIAL' in class android.os.Build
[2012-05-12 13:57:18 - search4] Warning: com.mobisage.android.f$a: can't find referenced class android.app.DownloadManager
[2012-05-12 13:57:18 - search4] Warning: com.mobisage.android.f$a: can't find referenced class android.app.DownloadManager$Request
[2012-05-12 13:57:18 - search4] Warning: com.mobisage.android.f$a: can't find referenced class android.app.DownloadManager
[2012-05-12 13:57:18 - search4] Warning: com.mobisage.android.f$a: can't find referenced class android.app.DownloadManager$Request
[2012-05-12 13:57:18 - search4] Warning: com.mobisage.android.f$a: can't find referenced class android.app.DownloadManager$Request
[2012-05-12 13:57:18 - search4] Warning: com.vpon.adon.android.webClientHandler.QRActivity: can't find referenced class com.googleing.zxinging.client.android.CaptureActivity
[2012-05-12 13:57:18 - search4] Warning: com.vpon.adon.android.webClientHandler.ShootActivity: can't find referenced class org.apache.http.entity.mime.MultipartEntity
[2012-05-12 13:57:18 - search4] Warning: com.vpon.adon.android.webClientHandler.ShootActivity: can't find referenced class org.apache.http.entity.mime.content.ContentBody
[2012-05-12 13:57:18 - search4] Warning: com.vpon.adon.android.webClientHandler.ShootActivity: can't find referenced class org.apache.http.entity.mime.content.FileBody
[2012-05-12 13:57:18 - search4] Warning: com.vpon.adon.android.webClientHandler.ShootActivity: can't find referenced class org.apache.http.entity.mime.MultipartEntity
[2012-05-12 13:57:18 - search4] Warning: com.vpon.adon.android.webClientHandler.ShootActivity: can't find referenced class org.apache.http.entity.mime.MultipartEntity
[2012-05-12 13:57:18 - search4] Warning: com.vpon.adon.android.webClientHandler.ShootActivity: can't find referenced class org.apache.http.entity.mime.content.FileBody
[2012-05-12 13:57:18 - search4]       You should check if you need to specify additional program jars.
[2012-05-12 13:57:18 - search4] Warning: there were 30 unresolved references to classes or interfaces.
[2012-05-12 13:57:18 - search4]          You may need to specify additional library jars (using '-libraryjars').
[2012-05-12 13:57:18 - search4] Warning: there were 4 unresolved references to program class members.
[2012-05-12 13:57:18 - search4]          Your input classes appear to be inconsistent.
[2012-05-12 13:57:18 - search4]          You may need to recompile them and try again.
[2012-05-12 13:57:18 - search4]          Alternatively, you may have to specify the option 
[2012-05-12 13:57:18 - search4]          '-dontskipnonpubliclibraryclassmembers'.
[2012-05-12 13:57:18 - search4] java.io.IOException: Please correct the above warnings first.
[2012-05-12 13:57:18 - search4]  at proguard.Initializer.execute(Initializer.java:321)
[2012-05-12 13:57:18 - search4]  at proguard.ProGuard.initialize(ProGuard.java:211)
[2012-05-12 13:57:18 - search4]  at proguard.ProGuard.execute(ProGuard.java:86)
[2012-05-12 13:57:18 - search4]  at proguard.ProGuard.main(ProGuard.java:492)