title: Can't Export Android Application in Eclipse
body: <p>I'm experiencing some strange behavior in Eclipse. I'm trying to export my Android application, which is a game that is written using AndEngine, the open source game engine. Not sure if that is relevant.</p>
  <p>Anyway, there are no errors in my project or the library dependencies of Android. I have been running the application on my phone with the debug build for ages. Now I want to export a signed application, and it won't work! (It did used to).</p>
  <p>I right click my project, click Android Tools &gt; Export Signed Application and <em>right</em> when I do that, two errors show up that say,</p>
  <blockquote>
  <p>No .class files were found in project &quot;AndEngine&quot; so none of the classfile basechecks could be run . Does the project need to be built first?</p>
  <p>No .class files were found in project &quot;AndEnginePhysicsBox2DExtension&quot; so none of the classfile basechecks could be run . Does the project need to be built first?</p>
  </blockquote>
  <p>How the heck do I fix this? I have done a Project &gt; Clean, open and closed Eclipse, open and closed the individual projects. And again - this error is NOT there until I go to export the app! What the heck!</p>