in your catalog\admin\products_attributes.php
after this code
CODE
$action = (isset($HTTP_GET_VARS['action']) ? $HTTP_GET_VARS['action'] : '');
Add:
$option_page...
in your catalog\admin\products_attributes.php
after this code
CODE
$action = (isset($HTTP_GET_VARS['action']) ? $HTTP_GET_VARS['action'] : '');
Add:
$option_page...