title: How to troubleshoot "Duplicate zip entry" error?
body: <p>I keep getting this error when switching from a previous project to this project and then trying to export it:</p>
  
  <pre><code>Proguard returned with error code 1. See console
  Warning: can't write resource [META-INF/MANIFEST.MF] (Duplicate zip entry [modonelib.jar:META-INF/MANIFEST.MF])
  Warning: can't write resource [META-INF/MANIFEST.MF] (Duplicate zip entry [mymainlib.jar:META-INF/MANIFEST.MF])
  java.io.IOException: Can't write [C:\Users\ih8ie8\AppData\Local\Temp\android_8070931993503351509.jar] (Can't read [C:\workspace\MyMainLib\bin\mymainlib.jar] (Unexpected end of ZLIB input stream))
      at proguard.OutputWriter.writeOutput(OutputWriter.java:264)
      at proguard.OutputWriter.execute(OutputWriter.java:160)
      at proguard.ProGuard.writeOutput(ProGuard.java:372)
      at proguard.ProGuard.execute(ProGuard.java:153)
      at proguard.ProGuard.main(ProGuard.java:492)
  Caused by: java.io.IOException: Can't read [C:\workspace\MyMainLib\bin\mymainlib.jar] (Unexpected end of ZLIB input stream)
      at proguard.InputReader.readInput(InputReader.java:230)
      at proguard.InputReader.readInput(InputReader.java:200)
      at proguard.OutputWriter.writeOutput(OutputWriter.java:253)
      ... 4 more
  Caused by: java.io.EOFException: Unexpected end of ZLIB input stream
      at java.util.zip.InflaterInputStream.fill(Unknown Source)
      at java.util.zip.InflaterInputStream.read(Unknown Source)
      at java.util.zip.ZipInputStream.read(Unknown Source)
      at java.util.zip.ZipInputStream.closeEntry(Unknown Source)
      at java.util.zip.ZipInputStream.getNextEntry(Unknown Source)
      at proguard.io.JarReader.read(JarReader.java:58)
      at proguard.io.DirectoryPump.readFiles(DirectoryPump.java:65)
      at proguard.io.DirectoryPump.pumpDataEntries(DirectoryPump.java:53)
      at proguard.InputReader.readInput(InputReader.java:226)
      ... 6 more
  </code></pre>
  
  <p>If I exit and restart Eclipse twice, then repeat the same exact procedure, the problem goes away.</p>
  
  <p>While I am able to eventually build a deploy-able app, I prefer getting rid of this error once and for all (it doesn't happen with other apps that I have in my workspace).</p>
  
  <p>Any idea how to troubleshoot this?</p>
  
  <p>Where do I look to find this "duplicate zip entry"?</p>