Views API version

Drupal 7 uses Views 3 so the function nodeownership_views_api() requires a minor change

 /**
  * Implements hook_views_api().
  */
function nodeownership_views_api() {
 return array(
   'api' => 3,
   'path' => drupal_get_path('module', 'nodeownership') . '/includes',
 );
}

Patch to follow...