title: Android plugin install Error. operation cannot be completed
body: <p>I am trying to add plugin android ADT for eclipse.</p>
  
  <p>I've followed the steps given <a href="http://developer.android.com/sdk/eclipse-adt.html#installing" rel="nofollow">here</a></p>
  
  <p>But when I am trying to install available softwares its giving error like </p>
  
  <blockquote>
    <p>"The Operation cannot be completed. see the details."</p>
  </blockquote>
  
  <p>in the details the following error is getting displayed.</p>
  
  <blockquote>
    <p>Cannot complete the install because one or more required items could not be found.
      Software being installed: Android Development Tools 16.0.1.v201112150204-238534 (com.android.ide.eclipse.adt.feature.group 16.0.1.v201112150204-238534)
      Missing requirement: Android Development Tools 16.0.1.v201112150204-238534 (com.android.ide.eclipse.adt.feature.group 16.0.1.v201112150204-238534) requires 'org.eclipse.core.runtime 3.6.0' but it could not be found.</p>
  </blockquote>
  
  <p>I am getting same error even if I downloaded the ADT-16.0.1.zip and given the local archive path.</p>
  
  <p>I am using Eclipse Gelelio.</p>