Invalid URL (even though it's valid)

I regenerated my app secret, which then regenerates a new access token. I tried that one and got the same result. Any help on how to further troubleshoot this?

I just reset my secret one more time so I can show you the URL I'm using. Here it is:

https://graph.facebook.com/mustardseed/feed?access_token=133283760145143|tGew8jbxi1ctfVlYh35CPYij1eE

(obviously this doesnt work in the browser anymore since I reset the secret again...I'm just posting it here so you can see the format that's failing)

re-opening the issue....and in case its of any interest, here's my feeds importer

$feeds_importer = new stdClass();
$feeds_importer->disabled = FALSE; /* Edit this to true to make a default feeds_importer disabled initially */
$feeds_importer->api_version = 1;
$feeds_importer->id = 'fbimporter';
$feeds_importer->config = array(
  'name' => 'fbimporter',
  'description' => 'fb',
  'fetcher' => array(
    'plugin_key' => 'FeedsHTTPFetcher',
    'config' => array(
      'auto_detect_feeds' => FALSE,
      'use_pubsubhubbub' => FALSE,
      'designated_hub' => '',
    ),
  ),
  'parser' => array(
    'plugin_key' => 'FeedsFacebookParser',
    'config' => array(),
  ),
  'processor' => array(
    'plugin_key' => 'FeedsNodeProcessor',
    'config' => array(
      'content_type' => 'page',
      'expire' => '-1',
      'author' => 0,
      'mappings' => array(
        0 => array(
          'source' => 'post_id',
          'target' => 'guid',
          'unique' => 0,
        ),
        1 => array(
          'source' => 'description',
          'target' => 'body',
          'unique' => FALSE,
        ),
        2 => array(
          'source' => 'from_name',
          'target' => 'title',
          'unique' => 0,
        ),
      ),
      'update_existing' => '1',
      'input_format' => 'full_html',
    ),
  ),
  'content_type' => '',
  'update' => 0,
  'import_period' => '1800',
  'expire_period' => 3600,
  'import_on_create' => 0,
  'process_in_background' => 0,
);

Hmm..did you intend to leave this in the patch?

+      'graph.asfdasdfasdf.com/blarg/feed?access_token=133283760145143|tGew8jbxi1ctfVlYh35CPYij1eE',

The patch applied to dev cleanly, but it didn't work. I hit 'import' and instead of giving me an error absolutely nothing happens. No error. No log entry. Nothing. It's almost as if it broke the submit button somehow.

Doh, scratch that...I apparently had part of the feed importer disabled. It looks like it took the url properly! Calling this reviewed and tested.