Exposed sort criteria broken

There is a feature called "issue title" which should be used to summarize the issue in a few words.
Broken doesn't add any kind of helpful informations.

Here is a view which works, and got imported without any problems.

$view = new view;
$view->name = 'exposed_sort';
$view->description = '';
$view->tag = 'default';
$view->base_table = 'node';
$view->human_name = 'exposed_sort';
$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'] = 'exposed_sort';
$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['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'] = '10';
$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']['alter_text'] = 0;
$handler->display->display_options['fields']['title']['alter']['make_link'] = 0;
$handler->display->display_options['fields']['title']['alter']['absolute'] = 0;
$handler->display->display_options['fields']['title']['alter']['word_boundary'] = 0;
$handler->display->display_options['fields']['title']['alter']['ellipsis'] = 0;
$handler->display->display_options['fields']['title']['alter']['strip_tags'] = 0;
$handler->display->display_options['fields']['title']['alter']['trim'] = 0;
$handler->display->display_options['fields']['title']['alter']['html'] = 0;
$handler->display->display_options['fields']['title']['hide_empty'] = 0;
$handler->display->display_options['fields']['title']['empty_zero'] = 0;
$handler->display->display_options['fields']['title']['link_to_node'] = 1;
/* Sort criterion: Content: Post date */
$handler->display->display_options['sorts']['created']['id'] = 'created';
$handler->display->display_options['sorts']['created']['table'] = 'node';
$handler->display->display_options['sorts']['created']['field'] = 'created';
$handler->display->display_options['sorts']['created']['order'] = 'DESC';
$handler->display->display_options['sorts']['created']['exposed'] = TRUE;
$handler->display->display_options['sorts']['created']['expose']['label'] = 'Post date';
/* 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'] = 0;
$handler->display->display_options['filters']['status']['expose']['operator'] = FALSE;

/* Display: Page */
$handler = $view->new_display('page', 'Page', 'page');
$handler->display->display_options['path'] = 'exposed-sort';

Can you please try to read http://drupal.org/node/571990 and report some helpful informations?

the main information is that we can't uncheck or check the checkbox "Expose this sort to visitors, to allow them to change it ". The checkbox does not retains its value.

Is it just me that you didn't wrote this in your initial description?

I have the same issue.
Create a view, add it a sort citeria then check the "expose" option for this criteria.
Reopen the criteria options, the checkbox stays unchecked and there is no exposed sort after saving the view.

After some investigation the problem seems to come from the admin theme
#1114038: Exposed Filter checkbox doesn't seem to work in AT Admin of Adaptivetheme

@nyl auster
What kind of theme do you use? Did you tryed to switch to the seven admin theme?

Same issue here. I'm using the latest DEV version and my admin theme is Seven.

Found out that when I disable the Button module, the problem disappears. After digging a bit deeper, I discovered that the button wrapper SPAN element, generated by Button Style is causing troubles. I'm still not sure why this causes troubles though.

Same issue, using seven as admin theme and views 3.0-rc1, button style module is NOT used.
To sum up: No changes to the "expose filter to users" checkbox are saved.
After importing the view from #1 exposed sorting seemed to work but I wasn't able
to deactivate it.

Deactivating any developer module solved the issue for me.

So this is entirely not an issue of views :)

I replicated the same issue -- and fix after disabling Developer module.

#11 Has solved it for me! Just deactivate all the developers modules. Thank you, Rechi, you saved my day!