Not working when a Contextual filter is added

Just that. Ordering was working fine until I added a contextual filter (Content: Nid). If I remove it, then it works fine again.

Here is the view exported code:

$view = new view();
$view->name = 'bloques_en_barra_lateral_derecha';
$view->description = '';
$view->tag = 'default';
$view->base_table = 'node';
$view->human_name = 'Bloques en Barra Lateral Derecha';
$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'] = 'Bloques en Barra Lateral Derecha';
$handler->display->display_options['use_more_always'] = FALSE;
$handler->display->display_options['access']['type'] = 'perm';
$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'] = 'none';
$handler->display->display_options['pager']['options']['offset'] = '0';
$handler->display->display_options['style_plugin'] = 'default';
$handler->display->display_options['row_plugin'] = 'node';
/* Field: Content: Title */
$handler->display->display_options['fields']['title']['id'] = 'title';
$handler->display->display_options['fields']['title']['table'] = 'node';
$handler->display->display_options['fields']['title']['field'] = 'title';
$handler->display->display_options['fields']['title']['label'] = '';
$handler->display->display_options['fields']['title']['alter']['word_boundary'] = FALSE;
$handler->display->display_options['fields']['title']['alter']['ellipsis'] = FALSE;
/* Sort criterion: Draggableviews: Weight */
$handler->display->display_options['sorts']['weight']['id'] = 'weight';
$handler->display->display_options['sorts']['weight']['table'] = 'draggableviews_structure';
$handler->display->display_options['sorts']['weight']['field'] = 'weight';
$handler->display->display_options['sorts']['weight']['draggableviews_setting_view'] = 'bloques_en_barra_lateral_derecha:page_1';
$handler->display->display_options['sorts']['weight']['draggableviews_setting_new_items_bottom_list'] = 1;
/* Filter criterion: Content: Published */
$handler->display->display_options['filters']['status']['id'] = 'status';
$handler->display->display_options['filters']['status']['table'] = 'node';
$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: Content: Type */
$handler->display->display_options['filters']['type']['id'] = 'type';
$handler->display->display_options['filters']['type']['table'] = 'node';
$handler->display->display_options['filters']['type']['field'] = 'type';
$handler->display->display_options['filters']['type']['value'] = array(
  'bloque' => 'bloque',
);
/* Filter criterion: Field: Región (field_regi_n) */
$handler->display->display_options['filters']['field_regi_n_tid']['id'] = 'field_regi_n_tid';
$handler->display->display_options['filters']['field_regi_n_tid']['table'] = 'field_data_field_regi_n';
$handler->display->display_options['filters']['field_regi_n_tid']['field'] = 'field_regi_n_tid';
$handler->display->display_options['filters']['field_regi_n_tid']['value'] = array(
  0 => '4',
);
$handler->display->display_options['filters']['field_regi_n_tid']['vocabulary'] = 'regiones';

/* Display: Block */
$handler = $view->new_display('block', 'Block', 'block');
$handler->display->display_options['defaults']['css_class'] = FALSE;
$handler->display->display_options['css_class'] = 'bloques-gestor bloques-gestor-barra-derecha';
$handler->display->display_options['defaults']['arguments'] = FALSE;
/* Contextual filter: Content: Nid */
$handler->display->display_options['arguments']['nid']['id'] = 'nid';
$handler->display->display_options['arguments']['nid']['table'] = 'node';
$handler->display->display_options['arguments']['nid']['field'] = 'nid';
$handler->display->display_options['arguments']['nid']['default_action'] = 'default';
$handler->display->display_options['arguments']['nid']['exception']['title'] = 'Todo(s)';
$handler->display->display_options['arguments']['nid']['default_argument_type'] = 'php';
$handler->display->display_options['arguments']['nid']['default_argument_options']['code'] = 'if (arg(0) == \'node\' && is_numeric(arg(1))) {
  return arg(1);
} else {
  return 0;
}';
$handler->display->display_options['arguments']['nid']['summary']['number_of_records'] = '0';
$handler->display->display_options['arguments']['nid']['summary']['format'] = 'default_summary';
$handler->display->display_options['arguments']['nid']['summary_options']['items_per_page'] = '25';
$handler->display->display_options['arguments']['nid']['not'] = TRUE;
$handler->display->display_options['block_description'] = 'Bloques en Barra Lateral Derecha';

/* Display: Ordenar Bloques en Barra Lateral Derecha */
$handler = $view->new_display('page', 'Ordenar Bloques en Barra Lateral Derecha', 'page_1');
$handler->display->display_options['defaults']['style_plugin'] = FALSE;
$handler->display->display_options['style_plugin'] = 'table';
$handler->display->display_options['style_options']['columns'] = array(
  'title' => 'title',
);
$handler->display->display_options['style_options']['default'] = '-1';
$handler->display->display_options['style_options']['info'] = array(
  'title' => array(
    'sortable' => 0,
    'default_sort_order' => 'asc',
    'align' => '',
    'separator' => '',
    'empty_column' => 0,
  ),
);
$handler->display->display_options['defaults']['style_options'] = FALSE;
$handler->display->display_options['defaults']['row_plugin'] = FALSE;
$handler->display->display_options['defaults']['row_options'] = FALSE;
$handler->display->display_options['defaults']['fields'] = FALSE;
/* Field: Content: Title */
$handler->display->display_options['fields']['title']['id'] = 'title';
$handler->display->display_options['fields']['title']['table'] = 'node';
$handler->display->display_options['fields']['title']['field'] = 'title';
$handler->display->display_options['fields']['title']['label'] = '';
$handler->display->display_options['fields']['title']['alter']['word_boundary'] = FALSE;
$handler->display->display_options['fields']['title']['alter']['ellipsis'] = FALSE;
/* Field: Draggableviews: Content */
$handler->display->display_options['fields']['draggableviews']['id'] = 'draggableviews';
$handler->display->display_options['fields']['draggableviews']['table'] = 'node';
$handler->display->display_options['fields']['draggableviews']['field'] = 'draggableviews';
$handler->display->display_options['fields']['draggableviews']['label'] = 'Contenido';
$handler->display->display_options['fields']['draggableviews']['element_default_classes'] = FALSE;
$handler->display->display_options['fields']['draggableviews']['hide_alter_empty'] = FALSE;
$handler->display->display_options['fields']['draggableviews']['draggableviews']['ajax'] = 0;
$handler->display->display_options['path'] = 'ordenar-bloques-gestor-barra-derecha';
$translatables['bloques_en_barra_lateral_derecha'] = array(
  t('Master'),
  t('Bloques en Barra Lateral Derecha'),
  t('more'),
  t('Apply'),
  t('Reset'),
  t('Sort by'),
  t('Asc'),
  t('Desc'),
  t('Block'),
  t('Todo(s)'),
  t('Ordenar Bloques en Barra Lateral Derecha'),
  t('Contenido'),
);