Have problem with SEO/ can not open adminpage

[Seeeans]

i setup all the SEO features

only14you.com is seen as properly working but could not connect to the admin page

any step during the SEO work may cause this problem? or any other problem

What i did is http://www.presto-changeo.com/en/content/6-prestashopseotips
from above link

RewriteCond %{HTTP_HOST} ^www.your_site.com$ [NC]
RewriteRule ^(.*)$ http://your_site.com/$1 [R=301,L]

these to the .htaccess file

static public function completeMetaTags($metaTags, $defaultValue)
   {
       global $cookie;
       $no_duplication = "";
       if (self::getValue('p'))
           $no_duplication .= ($no_duplication != ""?" #":"#").self::getValue('p');
       if ($no_duplication != "")
           $no_duplication = " (".$no_duplication.")";
       if ($metaTags['meta_title'] == NULL)
           $metaTags['meta_title'] = Configuration::get('PS_SHOP_NAME').' - '.$defaultValue;
       $metaTags['meta_title'] .= $no_duplication;
       if ($metaTags['meta_description'] == NULL)
           $metaTags['meta_description'] = (Configuration::get('PS_META_DESCRIPTION', intval($cookie->id_lang)) ? Configuration::get('PS_META_DESCRIPTION', intval($cookie->id_lang)) : '');
       $metaTags['meta_description'] .= $no_duplication;
       if ($metaTags['meta_keywords'] == NULL)
           $metaTags['meta_keywords'] = Configuration::get('PS_META_KEYWORDS', intval($cookie->id_lang)) ? Configuration::get('PS_META_KEYWORDS', intval($cookie->id_lang)) : '';
       return $metaTags;
   }

Open /classes/Tools.php and replace the function getHomeMetaTags (around line #490) with the function below.

static public function getHomeMetaTags($id_lang)
   {
       global $cookie, $page_name;

       /* Metas-tags */
       $metas = Meta::getMetaByPage($page_name, $id_lang);
       $ret['meta_title'] = (isset($metas['title']) AND $metas['title']) ? Configuration::get('PS_SHOP_NAME').' - '.$metas['title'] : Configuration::get('PS_SHOP_NAME');
       $ret['meta_description'] = (isset($metas['description']) AND $metas['description']) ? $metas['description'] : '';
       $ret['meta_keywords'] = (isset($metas['keywords']) AND $metas['keywords']) ? $metas['keywords'] :  '';
       $no_duplication = "";
       if (self::getValue('p'))
           $no_duplication .= ($no_duplication != ""?" #":"#").self::getValue('p');
       if ($no_duplication != "")
       {
           $ret['meta_title'] .= " (".$no_duplication.")";
           $ret['meta_description'] .= " (".$no_duplication.")";
       }
          return $ret;
   }

these to the tools.tpl file

Replace the current <title>...</title> tag in /themes/prestashop/header.tpl line #4 with the one below:
<title>{$meta_title|escape:'htmlall':'UTF-8'} {foreach from=$languages item=language}{if $language.iso_code == $lang_iso} ({$language.name}){/if}{/foreach} </title>
Replace the current <meta name="description"> tag in /themes/prestashop/header.tpl line #6 with the one below:
<meta name="description" content="{$meta_description|escape:htmlall:'UTF-8'}{foreach from=$languages item=language}{if $language.iso_code == $lang_iso} ({$language.name}){/if}{/foreach}" />

these to the header.tpl file

lastly is there any other way to access admin page?

what cause problem while i try to access admin page?

//additional info
when i try to access to the admin page, it shows white black page with '1' in the source of page
more.. i think i did robot thing.. is this the reason why it happened?