Patterns configuration form dissapeared

I have the same issue, however mine was an HTTP Error 500 (Internal Server Error) when accessing path admin/config/search/path/patterns and admin/config/search/path/update_bulk.

I discovered that when I disable the FAQ Module, I could now access both Patterns (admin/config/search/path/patterns) and Bulk Update (admin/config/search/path/update_bulk). It returns a Server Error on those paths when FAQ Module is enabled.
The Pathauto Settings (admin/config/search/path/settings) was accessible either way.

Hope that sheds a light somehow.

This is a duplicate of #1040468: Pathauto - PHP Fatal error: Call to undefined function token_get_list() caused by faq.module.

I'm seeing the same problem, admin/config/search/path/patterns (and admin/config/search/path/update_bulk)
Shows a 'save configuration' button but nothing else.

html source shows:

<div id="content" class="clearfix">
      <div class="element-invisible"><a id="main-content"></a></div>
                        <form action="/admin/config/search/path/patterns" method="post" id="pathauto-patterns-form" accept-charset="UTF-8"><div><input type="hidden" name="form_build_id" value="form-e9sx-vnqlFAiqwt_yVEa_DrbTSvksfXBeMAa4WkULOU" />
<input type="hidden" name="form_token" value="rEAjfr2O3p6ynN-13fEbbJusXedUVXhI9jcxppMwCs0" />
<input type="hidden" name="form_id" value="pathauto_patterns_form" />
<div class="form-actions form-wrapper" id="edit-actions"><input type="submit" id="edit-submit" name="op" value="Save configuration" class="form-submit" /></div></div></form>    </div>

I've also turned on and off , uninstalled reinstalled and tried the (2011-06-22) dev version.
No apache/php errors.

Comparing a working test site with my live site I have dug down a bit and can see that:

$all_settings = module_invoke_all('pathauto', 'settings');

called in

pathauto_patterns_form($form, $form_state)

is returning a blank array() rather than

Array
(
    [0] => stdClass Object
        (
            [module] => node
            [token_type] => node
            [groupheader] => Content paths

etc........

OK a bit of weird one, but the bug was caused by a drupal_add_js() call in a custom module which wasn't inside a function.
I moved it into a hook_init() and everything works fine now.

I'm experiencing this as well. In my case it is an issue with Mobile Tools module:
#1224178: Conflict with Pathauto

I've got the same issue only on prod after having updating to drupal 7.10.
[Follow]

It reappeared by disabling and re-enabling the module site map, but I don't think it's related...

Comment #7 gave me the idea of turning off all of my custom modules-- that put me on the scent. I module I have been working on which allows me to alter the layout of forms is apparently causing the conflict. I haven't yet found the solution yet.

Here is the solution: http://drupal.org/node/1267966#comment-5612752

I'm having the same problem -- and I'm not using the FAQ or the Mobile Tools module.

This is a duplicate.