title: Variable references non-existent resource Build.xml
body: <p>I am using Eclipse Kepler and I am trying to execute my build script.</p>
  
  <p>When I run a task, I get an Ant error that says </p>
  
  <blockquote>
    <p>Variable references non-existent resource :
    ${workspace_loc:/MyProject_JAVA/dev-new/build.xml}.</p>
  </blockquote>
  
  <p>The problem is this path is wrong.  It should be :</p>
  
  <blockquote>
    <p>/MyProject_JAVA/dev/dev-new/build.xml.</p>
  </blockquote>
  
  <p>I can go into External Tools and change the config for this one build, but if I try to run the task again, I get the same error.</p>
  
  <p>How do I change where Ant thinks the build file is?</p>