Error with Custom View and User Privacy

Could you please either attach the export of your view and/or pinpoint the exact views stuff (field, filter, argument, whatever) which triggers the message?

I have the exact same issue.

The problem is that $entity is NULL.

You'll find the export of the View I'm currently using.

$view = new view;
$view->name = 'le_club';
$view->description = '';
$view->tag = 'default';
$view->base_table = 'users';
$view->human_name = 'Le club';
$view->core = 7;
$view->api_version = '3.0';
$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'] = 'Le club';
$handler->display->display_options['access']['type'] = 'role';
$handler->display->display_options['access']['role'] = array(
  2 => '2',
);
$handler->display->display_options['cache']['type'] = 'none';
$handler->display->display_options['query']['type'] = 'views_query';
$handler->display->display_options['query']['options']['query_comment'] = FALSE;
$handler->display->display_options['exposed_form']['type'] = 'basic';
$handler->display->display_options['pager']['type'] = 'full';
$handler->display->display_options['pager']['options']['items_per_page'] = '20';
$handler->display->display_options['style_plugin'] = 'table';
$handler->display->display_options['style_options']['columns'] = array(
  'field_photo' => 'field_photo',
  'field_i_am' => 'field_i_am',
  'field_first_name' => 'field_first_name',
  'field_user_tasting' => 'field_user_tasting',
  'field_name' => 'field_last_name',
  'field_profession' => 'field_profession',
  'field_company' => 'field_company',
  'privatemsg_link' => 'privatemsg_link',
);
$handler->display->display_options['style_options']['default'] = 'field_first_name';
$handler->display->display_options['style_options']['info'] = array(
  'field_photo' => array(
    'sortable' => 0,
    'default_sort_order' => 'asc',
    'align' => '',
    'separator' => '',
    'empty_column' => 0,
  ),
  'field_i_am' => array(
    'sortable' => 0,
    'default_sort_order' => 'asc',
    'align' => '',
    'separator' => '',
    'empty_column' => 0,
  ),
  'field_first_name' => array(
    'sortable' => 1,
    'default_sort_order' => 'asc',
    'align' => '',
    'separator' => '',
    'empty_column' => 0,
  ),
  'field_user_tasting' => array(
    'sortable' => 0,
    'default_sort_order' => 'asc',
    'align' => '',
    'separator' => '',
    'empty_column' => 0,
  ),
  'field_last_name' => array(
    'sortable' => 1,
    'default_sort_order' => 'asc',
    'align' => '',
    'separator' => '',
    'empty_column' => 0,
  ),
  'field_profession' => array(
    'sortable' => 1,
    'default_sort_order' => 'asc',
    'align' => '',
    'separator' => '',
    'empty_column' => 0,
  ),
  'field_company' => array(
    'sortable' => 1,
    'default_sort_order' => 'asc',
    'align' => '',
    'separator' => '',
    'empty_column' => 0,
  ),
  'privatemsg_link' => array(
    'align' => '',
    'separator' => '',
    'empty_column' => 0,
  ),
);
$handler->display->display_options['style_options']['override'] = 1;
$handler->display->display_options['style_options']['sticky'] = 0;
$handler->display->display_options['style_options']['empty_table'] = 0;
/* Field: User: Photo */
$handler->display->display_options['fields']['field_photo']['id'] = 'field_photo';
$handler->display->display_options['fields']['field_photo']['table'] = 'field_data_field_photo';
$handler->display->display_options['fields']['field_photo']['field'] = 'field_photo';
$handler->display->display_options['fields']['field_photo']['label'] = '';
$handler->display->display_options['fields']['field_photo']['alter']['alter_text'] = 0;
$handler->display->display_options['fields']['field_photo']['alter']['make_link'] = 0;
$handler->display->display_options['fields']['field_photo']['alter']['absolute'] = 0;
$handler->display->display_options['fields']['field_photo']['alter']['external'] = 0;
$handler->display->display_options['fields']['field_photo']['alter']['replace_spaces'] = 0;
$handler->display->display_options['fields']['field_photo']['alter']['trim_whitespace'] = 0;
$handler->display->display_options['fields']['field_photo']['alter']['nl2br'] = 0;
$handler->display->display_options['fields']['field_photo']['alter']['word_boundary'] = 1;
$handler->display->display_options['fields']['field_photo']['alter']['ellipsis'] = 1;
$handler->display->display_options['fields']['field_photo']['alter']['strip_tags'] = 0;
$handler->display->display_options['fields']['field_photo']['alter']['trim'] = 0;
$handler->display->display_options['fields']['field_photo']['alter']['html'] = 0;
$handler->display->display_options['fields']['field_photo']['element_label_colon'] = FALSE;
$handler->display->display_options['fields']['field_photo']['element_default_classes'] = 1;
$handler->display->display_options['fields']['field_photo']['hide_empty'] = 0;
$handler->display->display_options['fields']['field_photo']['empty_zero'] = 0;
$handler->display->display_options['fields']['field_photo']['hide_alter_empty'] = 1;
$handler->display->display_options['fields']['field_photo']['click_sort_column'] = 'fid';
$handler->display->display_options['fields']['field_photo']['settings'] = array(
  'image_style' => '',
  'image_link' => '',
);
$handler->display->display_options['fields']['field_photo']['field_api_classes'] = 0;
/* Field: User: Je suis */
$handler->display->display_options['fields']['field_i_am']['id'] = 'field_i_am';
$handler->display->display_options['fields']['field_i_am']['table'] = 'field_data_field_i_am';
$handler->display->display_options['fields']['field_i_am']['field'] = 'field_i_am';
$handler->display->display_options['fields']['field_i_am']['exclude'] = TRUE;
$handler->display->display_options['fields']['field_i_am']['alter']['alter_text'] = 0;
$handler->display->display_options['fields']['field_i_am']['alter']['make_link'] = 0;
$handler->display->display_options['fields']['field_i_am']['alter']['absolute'] = 0;
$handler->display->display_options['fields']['field_i_am']['alter']['external'] = 0;
$handler->display->display_options['fields']['field_i_am']['alter']['replace_spaces'] = 0;
$handler->display->display_options['fields']['field_i_am']['alter']['trim_whitespace'] = 0;
$handler->display->display_options['fields']['field_i_am']['alter']['nl2br'] = 0;
$handler->display->display_options['fields']['field_i_am']['alter']['word_boundary'] = 1;
$handler->display->display_options['fields']['field_i_am']['alter']['ellipsis'] = 1;
$handler->display->display_options['fields']['field_i_am']['alter']['strip_tags'] = 0;
$handler->display->display_options['fields']['field_i_am']['alter']['trim'] = 0;
$handler->display->display_options['fields']['field_i_am']['alter']['html'] = 0;
$handler->display->display_options['fields']['field_i_am']['element_label_colon'] = 1;
$handler->display->display_options['fields']['field_i_am']['element_default_classes'] = 1;
$handler->display->display_options['fields']['field_i_am']['hide_empty'] = 0;
$handler->display->display_options['fields']['field_i_am']['empty_zero'] = 0;
$handler->display->display_options['fields']['field_i_am']['hide_alter_empty'] = 1;
$handler->display->display_options['fields']['field_i_am']['field_api_classes'] = 0;
/* Field: User: Prénom */
$handler->display->display_options['fields']['field_first_name']['id'] = 'field_first_name';
$handler->display->display_options['fields']['field_first_name']['table'] = 'field_data_field_first_name';
$handler->display->display_options['fields']['field_first_name']['field'] = 'field_first_name';
$handler->display->display_options['fields']['field_first_name']['alter']['alter_text'] = 1;
$handler->display->display_options['fields']['field_first_name']['alter']['text'] = '[field_first_name]
<div class="i-am"><span class="title">Je suis :</span><br \\>[field_i_am]</div>';
$handler->display->display_options['fields']['field_first_name']['alter']['make_link'] = 0;
$handler->display->display_options['fields']['field_first_name']['alter']['absolute'] = 0;
$handler->display->display_options['fields']['field_first_name']['alter']['external'] = 0;
$handler->display->display_options['fields']['field_first_name']['alter']['replace_spaces'] = 0;
$handler->display->display_options['fields']['field_first_name']['alter']['trim_whitespace'] = 0;
$handler->display->display_options['fields']['field_first_name']['alter']['nl2br'] = 0;
$handler->display->display_options['fields']['field_first_name']['alter']['word_boundary'] = 1;
$handler->display->display_options['fields']['field_first_name']['alter']['ellipsis'] = 1;
$handler->display->display_options['fields']['field_first_name']['alter']['strip_tags'] = 0;
$handler->display->display_options['fields']['field_first_name']['alter']['trim'] = 0;
$handler->display->display_options['fields']['field_first_name']['alter']['html'] = 0;
$handler->display->display_options['fields']['field_first_name']['element_label_colon'] = 1;
$handler->display->display_options['fields']['field_first_name']['element_default_classes'] = 1;
$handler->display->display_options['fields']['field_first_name']['hide_empty'] = 0;
$handler->display->display_options['fields']['field_first_name']['empty_zero'] = 0;
$handler->display->display_options['fields']['field_first_name']['hide_alter_empty'] = 1;
$handler->display->display_options['fields']['field_first_name']['field_api_classes'] = 0;
/* Field: User: Ma plus belle dégustation */
$handler->display->display_options['fields']['field_user_tasting']['id'] = 'field_user_tasting';
$handler->display->display_options['fields']['field_user_tasting']['table'] = 'field_data_field_user_tasting';
$handler->display->display_options['fields']['field_user_tasting']['field'] = 'field_user_tasting';
$handler->display->display_options['fields']['field_user_tasting']['exclude'] = TRUE;
$handler->display->display_options['fields']['field_user_tasting']['alter']['alter_text'] = 0;
$handler->display->display_options['fields']['field_user_tasting']['alter']['make_link'] = 0;
$handler->display->display_options['fields']['field_user_tasting']['alter']['absolute'] = 0;
$handler->display->display_options['fields']['field_user_tasting']['alter']['external'] = 0;
$handler->display->display_options['fields']['field_user_tasting']['alter']['replace_spaces'] = 0;
$handler->display->display_options['fields']['field_user_tasting']['alter']['trim_whitespace'] = 0;
$handler->display->display_options['fields']['field_user_tasting']['alter']['nl2br'] = 0;
$handler->display->display_options['fields']['field_user_tasting']['alter']['word_boundary'] = 1;
$handler->display->display_options['fields']['field_user_tasting']['alter']['ellipsis'] = 1;
$handler->display->display_options['fields']['field_user_tasting']['alter']['strip_tags'] = 0;
$handler->display->display_options['fields']['field_user_tasting']['alter']['trim'] = 0;
$handler->display->display_options['fields']['field_user_tasting']['alter']['html'] = 0;
$handler->display->display_options['fields']['field_user_tasting']['element_label_colon'] = 1;
$handler->display->display_options['fields']['field_user_tasting']['element_default_classes'] = 1;
$handler->display->display_options['fields']['field_user_tasting']['hide_empty'] = 0;
$handler->display->display_options['fields']['field_user_tasting']['empty_zero'] = 0;
$handler->display->display_options['fields']['field_user_tasting']['hide_alter_empty'] = 1;
$handler->display->display_options['fields']['field_user_tasting']['field_api_classes'] = 0;
/* Field: User: Nom */
$handler->display->display_options['fields']['field_last_name']['id'] = 'field_last_name';
$handler->display->display_options['fields']['field_last_name']['table'] = 'field_data_field_last_name';
$handler->display->display_options['fields']['field_last_name']['field'] = 'field_last_name';
$handler->display->display_options['fields']['field_last_name']['alter']['alter_text'] = 1;
$handler->display->display_options['fields']['field_last_name']['alter']['text'] = '[field_last_name]
<div class="tasting"><span class="title">Ma plus belle dégustation :</span><br \\>[field_user_tasting]</div>';
$handler->display->display_options['fields']['field_last_name']['alter']['make_link'] = 0;
$handler->display->display_options['fields']['field_last_name']['alter']['absolute'] = 0;
$handler->display->display_options['fields']['field_last_name']['alter']['external'] = 0;
$handler->display->display_options['fields']['field_last_name']['alter']['replace_spaces'] = 0;
$handler->display->display_options['fields']['field_last_name']['alter']['trim_whitespace'] = 0;
$handler->display->display_options['fields']['field_last_name']['alter']['nl2br'] = 0;
$handler->display->display_options['fields']['field_last_name']['alter']['word_boundary'] = 1;
$handler->display->display_options['fields']['field_last_name']['alter']['ellipsis'] = 1;
$handler->display->display_options['fields']['field_last_name']['alter']['strip_tags'] = 0;
$handler->display->display_options['fields']['field_last_name']['alter']['trim'] = 0;
$handler->display->display_options['fields']['field_last_name']['alter']['html'] = 0;
$handler->display->display_options['fields']['field_last_name']['element_label_colon'] = 1;
$handler->display->display_options['fields']['field_last_name']['element_default_classes'] = 1;
$handler->display->display_options['fields']['field_last_name']['hide_empty'] = 0;
$handler->display->display_options['fields']['field_last_name']['empty_zero'] = 0;
$handler->display->display_options['fields']['field_last_name']['hide_alter_empty'] = 1;
$handler->display->display_options['fields']['field_last_name']['field_api_classes'] = 0;
/* Field: User: Profession */
$handler->display->display_options['fields']['field_profession']['id'] = 'field_profession';
$handler->display->display_options['fields']['field_profession']['table'] = 'field_data_field_profession';
$handler->display->display_options['fields']['field_profession']['field'] = 'field_profession';
$handler->display->display_options['fields']['field_profession']['alter']['alter_text'] = 0;
$handler->display->display_options['fields']['field_profession']['alter']['make_link'] = 0;
$handler->display->display_options['fields']['field_profession']['alter']['absolute'] = 0;
$handler->display->display_options['fields']['field_profession']['alter']['external'] = 0;
$handler->display->display_options['fields']['field_profession']['alter']['replace_spaces'] = 0;
$handler->display->display_options['fields']['field_profession']['alter']['trim_whitespace'] = 0;
$handler->display->display_options['fields']['field_profession']['alter']['nl2br'] = 0;
$handler->display->display_options['fields']['field_profession']['alter']['word_boundary'] = 1;
$handler->display->display_options['fields']['field_profession']['alter']['ellipsis'] = 1;
$handler->display->display_options['fields']['field_profession']['alter']['strip_tags'] = 0;
$handler->display->display_options['fields']['field_profession']['alter']['trim'] = 0;
$handler->display->display_options['fields']['field_profession']['alter']['html'] = 0;
$handler->display->display_options['fields']['field_profession']['element_label_colon'] = 1;
$handler->display->display_options['fields']['field_profession']['element_default_classes'] = 1;
$handler->display->display_options['fields']['field_profession']['hide_empty'] = 0;
$handler->display->display_options['fields']['field_profession']['empty_zero'] = 0;
$handler->display->display_options['fields']['field_profession']['hide_alter_empty'] = 1;
$handler->display->display_options['fields']['field_profession']['field_api_classes'] = 0;
/* Field: User: Société */
$handler->display->display_options['fields']['field_company']['id'] = 'field_company';
$handler->display->display_options['fields']['field_company']['table'] = 'field_data_field_company';
$handler->display->display_options['fields']['field_company']['field'] = 'field_company';
$handler->display->display_options['fields']['field_company']['alter']['alter_text'] = 0;
$handler->display->display_options['fields']['field_company']['alter']['make_link'] = 0;
$handler->display->display_options['fields']['field_company']['alter']['absolute'] = 0;
$handler->display->display_options['fields']['field_company']['alter']['external'] = 0;
$handler->display->display_options['fields']['field_company']['alter']['replace_spaces'] = 0;
$handler->display->display_options['fields']['field_company']['alter']['trim_whitespace'] = 0;
$handler->display->display_options['fields']['field_company']['alter']['nl2br'] = 0;
$handler->display->display_options['fields']['field_company']['alter']['word_boundary'] = 1;
$handler->display->display_options['fields']['field_company']['alter']['ellipsis'] = 1;
$handler->display->display_options['fields']['field_company']['alter']['strip_tags'] = 0;
$handler->display->display_options['fields']['field_company']['alter']['trim'] = 0;
$handler->display->display_options['fields']['field_company']['alter']['html'] = 0;
$handler->display->display_options['fields']['field_company']['element_label_colon'] = 1;
$handler->display->display_options['fields']['field_company']['element_default_classes'] = 1;
$handler->display->display_options['fields']['field_company']['hide_empty'] = 0;
$handler->display->display_options['fields']['field_company']['empty_zero'] = 0;
$handler->display->display_options['fields']['field_company']['hide_alter_empty'] = 1;
$handler->display->display_options['fields']['field_company']['field_api_classes'] = 0;
/* Field: Privatemsg: Send Privatemsg link */
$handler->display->display_options['fields']['privatemsg_link']['id'] = 'privatemsg_link';
$handler->display->display_options['fields']['privatemsg_link']['table'] = 'users';
$handler->display->display_options['fields']['privatemsg_link']['field'] = 'privatemsg_link';
$handler->display->display_options['fields']['privatemsg_link']['label'] = '';
$handler->display->display_options['fields']['privatemsg_link']['element_label_colon'] = FALSE;
$handler->display->display_options['fields']['privatemsg_link']['return'] = 1;
/* 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'] = 1;
$handler->display->display_options['filters']['status']['expose']['operator'] = FALSE;
/* Filter criterion: User: Nom (field_last_name) */
$handler->display->display_options['filters']['field_last_name_value']['id'] = 'field_last_name_value';
$handler->display->display_options['filters']['field_last_name_value']['table'] = 'field_data_field_last_name';
$handler->display->display_options['filters']['field_last_name_value']['field'] = 'field_last_name_value';
$handler->display->display_options['filters']['field_last_name_value']['operator'] = 'contains';
$handler->display->display_options['filters']['field_last_name_value']['exposed'] = TRUE;
$handler->display->display_options['filters']['field_last_name_value']['expose']['operator_id'] = 'field_last_name_value_op';
$handler->display->display_options['filters']['field_last_name_value']['expose']['label'] = 'Les membres';
$handler->display->display_options['filters']['field_last_name_value']['expose']['operator'] = 'field_last_name_value_op';
$handler->display->display_options['filters']['field_last_name_value']['expose']['identifier'] = 'field_last_name_value';
$handler->display->display_options['filters']['field_last_name_value']['expose']['required'] = 0;
$handler->display->display_options['filters']['field_last_name_value']['expose']['multiple'] = FALSE;

/* Display: Page */
$handler = $view->new_display('page', 'Page', 'page');
$handler->display->display_options['path'] = 'le-club';
$handler->display->display_options['menu']['type'] = 'normal';
$handler->display->display_options['menu']['title'] = 'Le club';
$handler->display->display_options['menu']['weight'] = '4';
$handler->display->display_options['menu']['name'] = 'main-menu';
$handler->display->display_options['menu']['context'] = 0;

Uh-oh, you're having quite a bunch of fields in that view of yours. Could you please either:
1. attach a feature that has both your user fields and your view, or
2. (which would be even better) provide a _minimal_ example that triggers the message? By minimal I mean the stuff you provide should lead me to the error in the minimal time, most likely with only one field added to the user entity and to the view.

Sure, I see what you mean. Let me get back to you with it.

So, to reproduce:
1. Add a field on the user entity (in my example "Name").
2. Create 2 users (or use admin and user2). On one (admin or user1), make the field private and fill it, on the other one, leave it public.
3. Create a view on Users displaying the field (that's the only important thing, every other settings seems to have no importance).
4. Display the view (as a non-admin user, like user2), you should see the message.

I'm having the same issue. In my case none of my users have chosen to mark a field as private, but the error still occurs. (so it is not dependent on the field actually being private) I also am seeing it repeated 3 times no matter how many users I have - I'm not sure if that's just me, or if it may be helpful.

I also want to reiterate Simon's #4 above - you only see the error when you're logged in as a non-admin. (It took me a while of thinking things were fine before I noticed that.)

Thanks!

Thanks for reporting, this has been fixed; will roll a release with this soonish.