Notice: Undefined index: group in views_handler->ui_name() (line 277 of ../sites/all/modules/views/includes/handlers.inc).

There seem to be a number of ways to create a view that generates PHP notices like the following every time you view it:

Notice: Undefined index: uid in views_handler->get_value() (line 264 of /home/droth/web/drupal/sites/all/modules/views/includes/handlers.inc).

One example that does this is the view pasted below (this is a basic view of users configured to use a jump menu with the "uid" field rewritten to user/[uid] so the jump menu can use it as the path). I'm still working on figuring out exactly what causes it, although I might have an idea.

$view = new view;
$view->name = 'jumpmenu';
$view->description = '';
$view->tag = 'default';
$view->base_table = 'users';
$view->human_name = 'jumpmenu';
$view->core = 7;
$view->api_version = '3.0-alpha1';
$view->disabled = FALSE; /* Edit this to true to make a default view disabled initially */

/* Display: Master */
$handler = $view->new_display('default', 'Master', 'default');
$handler->display->display_options['title'] = 'jumpmenu';
$handler->display->display_options['access']['type'] = 'perm';
$handler->display->display_options['access']['perm'] = 'access user profiles';
$handler->display->display_options['cache']['type'] = 'none';
$handler->display->display_options['query']['type'] = 'views_query';
$handler->display->display_options['exposed_form']['type'] = 'basic';
$handler->display->display_options['pager']['type'] = 'full';
$handler->display->display_options['pager']['options']['items_per_page'] = '10';
$handler->display->display_options['style_plugin'] = 'jump_menu';
$handler->display->display_options['style_options']['hide'] = 0;
$handler->display->display_options['style_options']['path'] = 'uid';
$handler->display->display_options['style_options']['default_value'] = 0;
$handler->display->display_options['row_plugin'] = 'fields';
/* Field: User: Name */
$handler->display->display_options['fields']['name']['id'] = 'name';
$handler->display->display_options['fields']['name']['table'] = 'users';
$handler->display->display_options['fields']['name']['field'] = 'name';
$handler->display->display_options['fields']['name']['label'] = '';
$handler->display->display_options['fields']['name']['alter']['alter_text'] = 0;
$handler->display->display_options['fields']['name']['alter']['make_link'] = 0;
$handler->display->display_options['fields']['name']['alter']['absolute'] = 0;
$handler->display->display_options['fields']['name']['alter']['trim'] = 0;
$handler->display->display_options['fields']['name']['alter']['word_boundary'] = 0;
$handler->display->display_options['fields']['name']['alter']['ellipsis'] = 0;
$handler->display->display_options['fields']['name']['alter']['strip_tags'] = 0;
$handler->display->display_options['fields']['name']['alter']['html'] = 0;
$handler->display->display_options['fields']['name']['hide_empty'] = 0;
$handler->display->display_options['fields']['name']['empty_zero'] = 0;
$handler->display->display_options['fields']['name']['link_to_user'] = 1;
$handler->display->display_options['fields']['name']['overwrite_anonymous'] = 0;
/* Field: User: Uid */
$handler->display->display_options['fields']['uid']['id'] = 'uid';
$handler->display->display_options['fields']['uid']['table'] = 'users';
$handler->display->display_options['fields']['uid']['field'] = 'uid';
$handler->display->display_options['fields']['uid']['exclude'] = TRUE;
$handler->display->display_options['fields']['uid']['alter']['alter_text'] = 1;
$handler->display->display_options['fields']['uid']['alter']['text'] = 'user/[uid]';
$handler->display->display_options['fields']['uid']['alter']['make_link'] = 0;
$handler->display->display_options['fields']['uid']['alter']['absolute'] = 0;
$handler->display->display_options['fields']['uid']['alter']['external'] = 0;
$handler->display->display_options['fields']['uid']['alter']['replace_spaces'] = 0;
$handler->display->display_options['fields']['uid']['alter']['trim'] = 0;
$handler->display->display_options['fields']['uid']['alter']['nl2br'] = 0;
$handler->display->display_options['fields']['uid']['alter']['word_boundary'] = 1;
$handler->display->display_options['fields']['uid']['alter']['ellipsis'] = 1;
$handler->display->display_options['fields']['uid']['alter']['strip_tags'] = 0;
$handler->display->display_options['fields']['uid']['alter']['html'] = 0;
$handler->display->display_options['fields']['uid']['element_label_colon'] = 1;
$handler->display->display_options['fields']['uid']['element_default_classes'] = 1;
$handler->display->display_options['fields']['uid']['hide_empty'] = 0;
$handler->display->display_options['fields']['uid']['empty_zero'] = 0;
$handler->display->display_options['fields']['uid']['link_to_user'] = 0;
/* Sort criterion: User: Created date */
$handler->display->display_options['sorts']['created']['id'] = 'created';
$handler->display->display_options['sorts']['created']['table'] = 'users';
$handler->display->display_options['sorts']['created']['field'] = 'created';
$handler->display->display_options['sorts']['created']['order'] = 'DESC';
/* Filter criterion: User: Active */
$handler->display->display_options['filters']['status']['id'] = 'status';
$handler->display->display_options['filters']['status']['table'] = 'users';
$handler->display->display_options['filters']['status']['field'] = 'status';
$handler->display->display_options['filters']['status']['value'] = '1';
$handler->display->display_options['filters']['status']['group'] = 0;
$handler->display->display_options['filters']['status']['expose']['operator'] = FALSE;

/* Display: Page */
$handler = $view->new_display('page', 'Page', 'page');
$handler->display->display_options['path'] = 'jumpmenu';
$translatables['jumpmenu'] = array(
  t('Master'),
  t('jumpmenu'),
  t('more'),
  t('Apply'),
  t('Reset'),
  t('Sort by'),
  t('Asc'),
  t('Desc'),
  t('Items per page'),
  t('- All -'),
  t('Offset'),
  t('Uid'),
  t('user/[uid]'),
  t('Page'),
);