title: 'AllowAnonymous' could not be found
body: <p>Everything worked fine until I installed (Package Manager Console) the postal package, then uninstalled and installed an older version.</p>
  
  <p>Now I get an error where it previously was not.
  Error:</p>
  
  <p><code>The type or namespace name 'AllowAnonymous' could not be found (are you missing a using directive or an assembly reference?)</code></p>
  
  <p>Who knows how to fix this?</p>