Devel Krumo outputting all variables in a list format and not in an expandable clickable list When I do a dpm() on an array my devel krumo output is showing a list of the variables. Previously it was in a clickable expanding list where I can hide and show the child arrays. What settings did I miss to fix this?
If you are using bootstrap 3, you might encounter this problem. To fix this issue, add the following code to your template.php file.

function THE-THEME-NAME_status_messages($variables) {
  $display = $variables['display'];
  $output = '';

  $status_heading = array(
    'status' =&gt; t('Status message'),
    'error' =&gt; t('Error message'),
    'warning' =&gt; t('Warning message'),
  );
  foreach (drupal_get_messages($display) as $type =&gt; $messages) {
    $output .= "&lt;div class=\"messages $type\"&gt;\n";
    if (!empty($status_heading[$type])) {
      $output .= '&lt;h2 class="element-invisible"&gt;' . $status_heading[$type] . "&lt;/h2&gt;\n";
    }
    if (count($messages) &gt; 1) {
      $output .= " &lt;ul&gt;\n";
      foreach ($messages as $message) {
        $output .= '  &lt;li&gt;' . $message . "&lt;/li&gt;\n";
      }
      $output .= " &lt;/ul&gt;\n";
    }
    else {
      $output .= reset($messages);
    }
    $output .= "&lt;/div&gt;\n";
  }
  return $output;
}