title: Broken/missing handler after reinstall
body: <p>my site recently got deleted by a possible hack. I uploaded backed up folders and the db but now my views are not showing. everything else works.  i can't think of anything that changed, just uploaded a backup from a few days ago. </p>
  
  <p>the fields are showing this in admin/build/views/edit/nameofview</p>
  
  <pre><code>Broken/missing handler: node_data_field_guru_photo &gt; field_guru_photo_fid
  Broken/missing handler: node &gt; title
  Broken/missing handler: views &gt; nothing
  Broken/missing handler: node_revisions &gt; body
  Broken/missing handler: node_data_field_guru_link &gt; field_guru_link_url
  </code></pre>
  
  <p>I tried clearing cache</p>
  
  <p>I rearanged the fields in views and updated them and got this error </p>
  
  <pre><code>Display "Defaults" uses fields but there are none defined for it or all are excluded.
  </code></pre>