title: .htaccess 500 error after login with AuthType Basic
body: <p>Here's my .htaccess file:</p>
  
  <pre><code>AuthType Basic
  AuthName "LOG IN"
  AuthUserFile .htpasswd
  Require valid-user
  </code></pre>
  
  <p>After logging in, I get a 500 error. If I clear the .htaccess file, it works fine.</p>
  
  <p>Any ideas?</p>