Chromium browser unable handle magnetic links

[SteVe Cook]

External Protocol Request window opens when a magnet link is clicked. Selecting Launch Application opens another Chromium window instead of transmission.
See attached screen shot of External Protocol Request window for message it gives.
Effects Lubuntu and Xubuntu, not tested on Ubuntu.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: chromium-browser 18.0.1025.151~r130497-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic i686
ApportVersion: 2.0.1-0ubuntu4
Architecture: i386
Date: Tue Apr 17 20:34:55 2012
Desktop-Session:
 DESKTOP_SESSION = Lubuntu
 XDG_CONFIG_DIRS = /etc/xdg/lubuntu/:/etc/xdg/xdg-Lubuntu:/etc/xdg
 XDG_DATA_DIRS = /etc/xdg/lubuntu:/usr/share/Lubuntu:/usr/local/share/:/usr/share/:/usr/share:/usr/share/gdm:/var/lib/menu-xdg
Env:
 MOZ_PLUGIN_PATH = None
 LD_LIBRARY_PATH = None
InstallationMedia: Lubuntu 12.04 "Precise Pangolin" - Alpha i386 (20111129.1)
ProcEnviron:
 LANGUAGE=en_GB:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: chromium-browser
UpgradeStatus: No upgrade log present (probably fresh install)
chromium-default: CHROMIUM_FLAGS=""

[SteVe Cook (yorvyk)]

This appears to be a duplicate of #932472 which offers a solution.