Apturl links don't work

Midori 0.5.11 ((null)) Midori
GTK+ 3.14.15 (3.14.15) Glib 2.42.2 (2.42.2)
WebKitGTK+ 2.4.8 (2.4.8) libSoup 2.44.2
cairo 1.14.2 (1.14.2) libnotify No
gcr 3.10.1 granite 0.3.1
Platform X11; Linux x86_64
Identification Mozilla/5.0 (X11; Linux) AppleWebKit/538.15+ Midori/0.5
Video Formats H264 [x] Ogg Theora [x] WebM [x]
Netscape Plugins:
about:widgets about:geolocation about:home about:paths about:private about:dial about: about:new about:search about:version

Distributor ID: elementary OS
Description: elementary OS Freya
Release: 0.3.1
Codename: freya

Apturl links direct to not found pages. No amount of configuration seems to change this.

Following these instructions make no difference:
http://jeffhoogland.blogspot.com/2012/03/howto-apturl-with-midori-browser.html

They work without issue under Firefox under the same configuration.

Reproducibility: Always

Steps to reproduce:
Install apturl
Install the PlayDeb package
Attempt to use any apturl install link on the PlayDeb website (http://www.playdeb.net/)
Observe not found page