title: Importing project - build path contains duplicate entry: 'src' for project
body: <p>i'm importing a project into workspace, i get the following error:</p>
  
  <pre><code>build path contains duplicate entry: 'src' for project 'myproject'
  </code></pre>
  
  <ul>
  <li><p>.classpath seems to be alright:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;classpath&gt;
      &lt;classpathentry exported="true" kind="con" path="com.android.ide.eclipse.adt.LIBRARIES"/&gt;
      &lt;classpathentry exported="true" kind="con" path="com.android.ide.eclipse.adt.DEPENDENCIES"/&gt;
      &lt;classpathentry excluding="..." kind="src" path="src"/&gt;
      &lt;classpathentry kind="src" path="gen"/&gt;
      &lt;classpathentry exported="true" kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/&gt;
      &lt;classpathentry kind="output" path="bin/classes"/&gt;
  &lt;/classpath&gt;
  </code></pre></li>
  <li><p>My build target is checked in properties->android.</p></li>
  <li><p>In my properties->java build path->source, i got both of my src and gen folders</p></li>
  <li><p>I imported my project with File->import</p></li>
  <li><p>the error appears in a pop-up while importing the project. I click "ok", pop-up disappears, eclipse build the project, and then the project works fine (no errors, maybe eclipse solved the problem by itself).</p></li>
  </ul>
  
  <p>i could just ignore the error and work on my project, but i'd like to understand what's wrong with the initial project i'm importing</p>
  
  <hr>
  
  <ul>
  <li><p><strong>.classpath, .project, AndroidManifest.xml, project.properties</strong> are exactly the same between initial project and the one imported into workspace</p></li>
  <li><p>I got a difference between my <strong>.settings / org.eclipse.jdt.core.prefs</strong> in my initial project and the one imported inside my workspace:  </p>
  
  <p>initial project:  </p>
  
  <pre><code>eclipse.preferences.version=1
  org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.6
  org.eclipse.jdt.core.compiler.compliance=1.6
  org.eclipse.jdt.core.compiler.source=1.6
  </code></pre>
  
  <p>once imported, inside workspace</p>
  
  <pre><code>eclipse.preferences.version=1
  org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
  org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.6
  org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
  org.eclipse.jdt.core.compiler.compliance=1.6
  org.eclipse.jdt.core.compiler.debug.lineNumber=generate
  org.eclipse.jdt.core.compiler.debug.localVariable=generate
  org.eclipse.jdt.core.compiler.debug.sourceFile=generate
  org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
  org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
  org.eclipse.jdt.core.compiler.source=1.6
  </code></pre></li>
  </ul>
  
  <p>however i tried copy paste the final version of this file in my initial project, then import it again; i still get the error.</p>