Argument not replaced in alias

Here's an export of one of my affected views. Hopefully this will help.

$view = new view;
$view->name = 'most_recent';
$view->description = 'View of the most recent rants posted.';
$view->tag = '';
$view->view_php = '';
$view->base_table = 'node';
$view->is_cacheable = FALSE;
$view->api_version = 2;
$view->disabled = FALSE; /* Edit this to true to make a default view disabled initially */
$handler = $view->new_display('default', 'Defaults', 'default');
$handler->override_option('relationships', array(
  'votingapi_cache' => array(
    'label' => 'Voting results',
    'required' => 0,
    'votingapi' => array(
      'value_type' => 'points',
      'tag' => 'vote',
      'function' => 'sum',
    ),
    'id' => 'votingapi_cache',
    'table' => 'node',
    'field' => 'votingapi_cache',
    'relationship' => 'none',
  ),
));
$handler->override_option('fields', array(
  'value' => array(
    'label' => '',
    'alter' => array(
      'alter_text' => 0,
      'text' => '',
      'make_link' => 0,
      'path' => '',
      'link_class' => '',
      'alt' => '',
      'prefix' => '',
      'suffix' => '',
      'target' => '',
      'help' => '',
      'trim' => 0,
      'max_length' => '',
      'word_boundary' => 1,
      'ellipsis' => 1,
      'strip_tags' => 0,
      'html' => 0,
    ),
    'empty' => '0',
    'hide_empty' => 0,
    'empty_zero' => 1,
    'set_precision' => 0,
    'precision' => '0',
    'decimal' => '.',
    'separator' => ',',
    'prefix' => '',
    'suffix' => '',
    'appearance' => NULL,
    'exclude' => 0,
    'id' => 'value',
    'table' => 'votingapi_cache',
    'field' => 'value',
    'relationship' => 'votingapi_cache',
    'override' => array(
      'button' => 'Override',
    ),
  ),
  'title' => array(
    'label' => '',
    'alter' => array(
      'alter_text' => 0,
      'text' => '',
      'make_link' => 0,
      'path' => '',
      'link_class' => '',
      'alt' => '',
      'prefix' => '',
      'suffix' => '',
      'help' => '',
      'trim' => 0,
      'max_length' => '',
      'word_boundary' => 1,
      'ellipsis' => 1,
      'strip_tags' => 0,
      'html' => 0,
    ),
    'link_to_node' => 1,
    'exclude' => 0,
    'id' => 'title',
    'table' => 'node',
    'field' => 'title',
    'relationship' => 'none',
  ),
  'name' => array(
    'label' => '',
    'alter' => array(
      'alter_text' => 0,
      'text' => '',
      'make_link' => 0,
      'path' => '',
      'link_class' => '',
      'alt' => '',
      'prefix' => '',
      'suffix' => '',
      'help' => '',
      'trim' => 0,
      'max_length' => '',
      'word_boundary' => 1,
      'ellipsis' => 1,
      'strip_tags' => 0,
      'html' => 0,
    ),
    'link_to_user' => 1,
    'overwrite_anonymous' => 0,
    'anonymous_text' => '',
    'exclude' => 1,
    'id' => 'name',
    'table' => 'users',
    'field' => 'name',
    'relationship' => 'none',
  ),
  'created' => array(
    'label' => '',
    'alter' => array(
      'alter_text' => 1,
      'text' => 'Posted by [name] — [created]',
      'make_link' => 0,
      'path' => '',
      'link_class' => '',
      'alt' => '',
      'prefix' => '',
      'suffix' => '',
      'help' => '',
      'trim' => 0,
      'max_length' => '',
      'word_boundary' => 1,
      'ellipsis' => 1,
      'strip_tags' => 0,
      'html' => 0,
    ),
    'date_format' => 'time ago',
    'custom_date_format' => '',
    'exclude' => 0,
    'id' => 'created',
    'table' => 'node',
    'field' => 'created',
    'relationship' => 'none',
  ),
));
$handler->override_option('sorts', array(
  'created' => array(
    'order' => 'DESC',
    'granularity' => 'second',
    'id' => 'created',
    'table' => 'node',
    'field' => 'created',
    'relationship' => 'none',
  ),
));
$handler->override_option('arguments', array(
  'tid' => array(
    'default_action' => 'default',
    'style_plugin' => 'default_summary',
    'style_options' => array(),
    'wildcard' => 'all',
    'wildcard_substitution' => '',
    'title' => '',
    'breadcrumb' => '',
    'default_argument_type' => 'fixed',
    'default_argument' => '',
    'validate_type' => 'php',
    'validate_fail' => 'ignore',
    'break_phrase' => 0,
    'add_table' => 0,
    'require_value' => 0,
    'reduce_duplicates' => 0,
    'set_breadcrumb' => 0,
    'id' => 'tid',
    'table' => 'term_node',
    'field' => 'tid',
    'validate_user_argument_type' => 'uid',
    'validate_user_roles' => array(
      '2' => 0,
      '4' => 0,
      '3' => 0,
    ),
    'relationship' => 'none',
    'default_options_div_prefix' => '',
    'default_argument_user' => 0,
    'default_argument_fixed' => 'all',
    'default_argument_php' => '',
    'validate_argument_node_type' => array(
      'tellafriend_node' => 0,
      'announcement' => 0,
      'celebrity' => 0,
      'faq' => 0,
      'lrc_rant' => 0,
      'page' => 0,
      'profile' => 0,
      'rant' => 0,
      'video_rant' => 0,
    ),
    'validate_argument_node_access' => 0,
    'validate_argument_nid_type' => 'nid',
    'validate_argument_vocabulary' => array(
      '1' => 1,
      '2' => 0,
    ),
    'validate_argument_type' => 'tid',
    'validate_argument_transform' => 0,
    'validate_user_restrict_roles' => 0,
    'validate_argument_node_flag_name' => '*relationship*',
    'validate_argument_node_flag_test' => 'flaggable',
    'validate_argument_node_flag_id_type' => 'id',
    'validate_argument_user_flag_name' => '*relationship*',
    'validate_argument_user_flag_test' => 'flaggable',
    'validate_argument_user_flag_id_type' => 'id',
    'validate_argument_php' => 'if($argument && $term = taxonomy_get_term($argument)) {
  $handler->options[\'title\'] = \'Most Recent Rants in \'.$term->name;
}
return TRUE;',
    'override' => array(
      'button' => 'Override',
    ),
  ),
));
$handler->override_option('filters', array(
  'status' => array(
    'operator' => '=',
    'value' => '1',
    'group' => '0',
    'exposed' => FALSE,
    'expose' => array(
      'operator' => FALSE,
      'label' => '',
    ),
    'id' => 'status',
    'table' => 'node',
    'field' => 'status',
    'relationship' => 'none',
  ),
  'type' => array(
    'operator' => 'in',
    'value' => array(
      'lrc_rant' => 'lrc_rant',
      'rant' => 'rant',
      'video_rant' => 'video_rant',
    ),
    'group' => '0',
    'exposed' => FALSE,
    'expose' => array(
      'operator' => FALSE,
      'label' => '',
    ),
    'id' => 'type',
    'table' => 'node',
    'field' => 'type',
    'relationship' => 'none',
  ),
));
$handler->override_option('access', array(
  'type' => 'none',
));
$handler->override_option('cache', array(
  'type' => 'none',
));
$handler->override_option('title', 'Most Recent Rants');
$handler->override_option('header', '<?php if ($GLOBALS[\'user\']->uid >> 0) { ?>
<div id="post-rant" class="authenticated"><a href="/node/add/rant">Post a Rant</a></div>
<?php } else { ?>
<div id="post-rant" class="anonymous"><a href="/user/login">Login</a> or <a href="/user/register">create an account</a> to post a Rant.</div>
<?php } ?>');
$handler->override_option('header_format', '3');
$handler->override_option('header_empty', 1);
$handler->override_option('empty', 'There are no rants in this category.');
$handler->override_option('empty_format', '1');
$handler->override_option('use_ajax', TRUE);
$handler->override_option('items_per_page', 15);
$handler->override_option('use_pager', '1');
$handler->override_option('row_plugin', 'node');
$handler->override_option('row_options', array(
  'relationship' => 'none',
  'build_mode' => 'teaser',
  'links' => 1,
  'comments' => 0,
));
$handler = $view->new_display('page', 'Page', 'page_1');
$handler->override_option('path', 'rants/%/recent');
$handler->override_option('menu', array(
  'type' => 'none',
  'title' => '',
  'description' => '',
  'weight' => 0,
  'name' => 'navigation',
));
$handler->override_option('tab_options', array(
  'type' => 'none',
  'title' => '',
  'description' => '',
  'weight' => 0,
));
$handler = $view->new_display('feed', 'Feed', 'feed_1');
$handler->override_option('arguments', array(
  'tid' => array(
    'default_action' => 'default',
    'style_plugin' => 'default_summary',
    'style_options' => array(),
    'wildcard' => 'all',
    'wildcard_substitution' => '',
    'title' => '',
    'breadcrumb' => '',
    'default_argument_type' => 'fixed',
    'default_argument' => '',
    'validate_type' => 'php',
    'validate_fail' => 'ignore',
    'break_phrase' => 0,
    'add_table' => 0,
    'require_value' => 0,
    'reduce_duplicates' => 0,
    'set_breadcrumb' => 0,
    'id' => 'tid',
    'table' => 'term_node',
    'field' => 'tid',
    'validate_user_argument_type' => 'uid',
    'validate_user_roles' => array(
      '2' => 0,
      '4' => 0,
      '3' => 0,
    ),
    'relationship' => 'none',
    'default_options_div_prefix' => '',
    'default_argument_user' => 0,
    'default_argument_fixed' => 'all',
    'default_argument_php' => '',
    'validate_argument_node_type' => array(
      'tellafriend_node' => 0,
      'feed' => 0,
      'page' => 0,
      'profile' => 0,
      'rant' => 0,
      'story' => 0,
    ),
    'validate_argument_node_access' => 0,
    'validate_argument_nid_type' => 'nid',
    'validate_argument_vocabulary' => array(
      '1' => 0,
      '2' => 0,
    ),
    'validate_argument_type' => 'tid',
    'validate_argument_transform' => 0,
    'validate_user_restrict_roles' => 0,
    'validate_argument_node_flag_name' => '*relationship*',
    'validate_argument_node_flag_test' => 'flaggable',
    'validate_argument_node_flag_id_type' => 'id',
    'validate_argument_user_flag_name' => '*relationship*',
    'validate_argument_user_flag_test' => 'flaggable',
    'validate_argument_user_flag_id_type' => 'id',
    'validate_argument_php' => 'if($argument && $term = taxonomy_get_term($argument)) {
  $handler->options[\'title\'] = \'Most Recent Rants in \'.$term->name.\'at MyPetPeeves.com\';
}
return TRUE;',
    'override' => array(
      'button' => 'Use default',
    ),
  ),
));
$handler->override_option('title', 'Most Recent Rants at MyPetPeeves.com');
$handler->override_option('style_plugin', 'rss');
$handler->override_option('style_options', array(
  'mission_description' => FALSE,
  'description' => '',
));
$handler->override_option('row_plugin', 'node_rss');
$handler->override_option('row_options', array(
  'relationship' => 'none',
  'item_length' => 'default',
));
$handler->override_option('path', 'rants/%/recent/rss');
$handler->override_option('menu', array(
  'type' => 'none',
  'title' => '',
  'description' => '',
  'weight' => 0,
  'name' => 'navigation',
));
$handler->override_option('tab_options', array(
  'type' => 'none',
  'title' => '',
  'description' => '',
  'weight' => 0,
));
$handler->override_option('displays', array(
  'page_1' => 'page_1',
  'block_1' => 'block_1',
  'default' => 0,
));
$handler->override_option('sitename_title', 0);
$handler = $view->new_display('block', 'Block', 'block_1');
$handler->override_option('empty', 'There are no rants.');
$handler->override_option('items_per_page', 10);
$handler->override_option('use_pager', 'mini');
$handler->override_option('row_plugin', 'fields');
$handler->override_option('row_options', array(
  'inline' => array(),
  'separator' => '',
));
$handler->override_option('block_description', '');
$handler->override_option('block_caching', -1);

For what it's worth, I do have a bit of an odd argument setting. First I set my argument validation to "Taxonomy term". Then I changed my argument validation to "PHP Code" and entered some code to adjust the view's title based on the argument. However, as you can see in the above code, the original taxonomy term validation settings remain in the database. This allows View Alias to pick up this view and correctly associate it with a taxonomy vocabulary. I've had these views set up this way for months now and it's worked just fine until now.