Custom BBCode Plugin kills CMS?

[Jaxel]

So I am using a plugin to setup a custom BBCode. On most forums it works fine, but on some forums, while this plugin is active it kills the CMS... does anyone know why this would happen?

bbcode_fetch_tags
if (true)
{
// [MEDIA] [MEDIA=XXX]
$tag_list['no_option']['media'] = array(
'callback' => 'handle_external',
'external_callback' => 'handle_bbcode_media',
'strip_empty' => true,
'stop_parse' => true,
'disable_smilies' => true,
'disable_wordwrap' => true,
'strip_space_after' => 0,
);
$tag_list['option']['media'] = array(
'callback' => 'handle_external',
'external_callback' => 'handle_bbcode_media',
'strip_empty' => true,
'stop_parse' => true,
'disable_smilies' => true,
'disable_wordwrap' => true,
'strip_space_after' => 0,
);
}

function handle_bbcode_media(&$parser, $mid, $title)
{
global $vbulletin;
require_once(DIR.'/media/media_functions_hrefs.php');

if (!$media = $vbulletin->db->query_first("
SELECT media.*, media_service.*
FROM " . TABLE_PREFIX . "media AS media
LEFT JOIN " . TABLE_PREFIX . "media_service AS media_service ON(media_service.serviceID = media.serviceID)
WHERE media.mediaID = '".$mid."'
"))
{
$templater = vB_Template::create('8WR_media_bbcode');
$templater->register('error', fetch_error('media_details_invalid'));
return $templater->render();
}

$media['embed'] = str_replace('{serviceVAL}', $media['serviceVAL'], $media['svcEmbed']);
$media['embed'] = str_replace('{serviceVAL2}', $media['serviceVAL2'], $media['embed']);
$media['embed'] = str_replace('{local}', $vbulletin->options['bburl']."/".$vbulletin->options['media_thumb_dir'], $media['embed']);
$media['embed'] = str_replace("{ap10}", "0", $media['embed']);
$media['embed'] = str_replace("{apYN}", "no", $media['embed']);
$media['embed'] = str_replace("{apTF}", "false", $media['embed']);
$media['href'] = create_full_url(construct_href_details($media));

if ($title) { $media['title'] = $title; }

$templater = vB_Template::create('8WR_media_bbcode');
$templater->register('media', $media);
return $templater->render();
}