title: org-agenda buffer no longer shows agenda items
body: <p>I recently decided to redo my entire org setup and make it more efficient. I used to have .org files all over my machine, but they now reside in 2 folders:</p>
  
  <pre><code>~/work/org
  ~/personal/org
  </code></pre>
  
  <p>I reset where org-mode looks for agenda files with</p>
  
  <pre><code>;; set agenda files
  (setq org-agenda-files (quote ("~/work/org"
                     "~/personal/org")))
  </code></pre>
  
  <p>However, when I pull up the todo list (<code>C-c a t</code>), I get errors of the form:</p>
  
  <pre><code>Non-existent agenda file [filename]. [R]emove from list or [A]bort?
  </code></pre>
  
  <p>for files that were in the old list. If I remove all these files, I eventually get an <em>Org Agenda</em> buffer that simply shows:</p>
  
  <pre><code>Global list of TODO items of type: ALL
  Available with `N r': (0)[ALL]
  </code></pre>
  
  <p>Any idea on what I am doing wrong?</p>