the developer notes, when generated include a path to the include file that is specific to the system they are installed on.
Take a look at the developer notes that are generated, it will include an line similar to this from the original server:
include("/homepages/23/d401763543/htdocs/cms/WA_CMS/addtosite.php");
but on the new server the path will be different. you will need to update the path to the correct one for the new server on your pages.