Well, for the background link, I think that the webpage has a problem, You can see all the internal links just under -Download- link, They aren't good too. In the next part of the page, some links have the same URL structure and work.
I can't explain why, because if the link doesn't exists, it ought to display an error page.
A+
Mozilla/5.0 (x11; U; Linux x86_64; fr-FR; rv:38.0) Gecko/20100101 Ubuntu/12.04 K-Meleon/76.0
Web:
http://jujuland.pagesperso-orange.fr/
Mail : alain [dot] aupeix [at] wanadoo [dot] fr
Ubuntu 12.04 - Gramps 3.4.9 - Harbour 3.2.0 - Hwgui 2.20-3 - K-Meleon 76.0 rc