title: Conversion to Dalvik format failed with error 1 in Android on export (adt 21)
body: <p>I know a form of this question is out there, but I can't find anything specifically that fits my scenario, so here it is.</p>
  
  <p>My app compiles and runs perfectly when testing in the emulator, but when I try to export a signed apk I get the <code>Conversion to Dalvik format failed with error 1</code>.  The Eclipse error log shows this stack trace:</p>
  
  <pre><code>com.android.ide.eclipse.adt.internal.build.DexException: Conversion to Dalvik format failed with error 1
  at com.android.ide.eclipse.adt.internal.build.BuildHelper.executeDx(BuildHelper.java:751)
  at com.android.ide.eclipse.adt.internal.project.ExportHelper.exportReleaseApk(ExportHelper.java:269)
  at com.android.ide.eclipse.adt.internal.wizards.export.ExportWizard.doExport(ExportWizard.java:296)
  at com.android.ide.eclipse.adt.internal.wizards.export.ExportWizard.access$0(ExportWizard.java:233)
  at com.android.ide.eclipse.adt.internal.wizards.export.ExportWizard$1.run(ExportWizard.java:218)
  at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121)
  </code></pre>
  
  <p>I don't have the naming collisions that other people seem to have (at least it doesn't say so in the error), and I'm stumped as to why it runs in the emulator, but I can't export.</p>
  
  <p>I'm not using ProGuard either, by the way.</p>