"[SOLVED] Downloading Extension Guide fails"

Hi Officials,
I've already sent an email to your contact address. I've tried to download the "Extension Guide" for RM from the link stated at http://rapid-i.com/content/view/36/209/ but unfortunately. The "product" cannot be found.

See http://rapid-i.com/component/page,shop.product_details/flypage,flypage.tpl/product_id,52/category_id,5/option,com_virtuemart/Itemid,180/

Could you take a look at this!? I really could use the Guide. Is there another way to get it?

Regards,
Urs