title: Erased project from Project Explorer and cannot re-import it
body: <p>I erased a project from the Project Explorer, because I didn't think I had everything in the Workspace folder that it needed.  I was getting error messages.  When I got the complete project into the workspace folder and tried to re-import it I get this message: "Some projects cannot be imported because they already exist in the workspace."  </p>
  
  <p>The three folders of the project show up in the window, but are greyed out and cannot be selected.</p>
  
  <p>Thanks to Arun and Francis below.... but new problem</p>
  
  <p>OK. Great! Got passed that one deleting from hard disk and creating a new workspace folder. But now when I try to run it as an Android Application I get the message, "No compatible targets were found. Do you wish to add new Android Virtual device? And in the Console: "Failed to find an AVD compatible with target 'Google APIs'." I'm really new to this so thanks for whatever patience you have to answer newbie questions.</p>