when I try to access the meta tags area for a product of category in admin i get

meta tags - Fatal error: Class 'FCKeditor' not found in /home/costumec/public_html/admin/categories.php on line 849
line 849 is
Code:
$oFCKeditor = new FCKeditor('metatags_description[' . $languages[$i]['id']  . ']') ;