tomboy doesn't sync to ubuntu-one. (Exception opening URL: The specified location is not supported)

[Tor Magnus Strøm Briskodden]

Not able to setup sync of tomboy to U1. When running --debug I see that I get an exception when I try to connect to the server. It says it's listening for OAuth callback's, but if I open the authorizing-link in a browser manually, it doesn't seem to pick up the response.

[DEBUG 08:29:24.490] Listening on http://localhost:8000/tomboy-web-sync/ for OAuth callback
[DEBUG 08:29:24.514] Building web request for URL: https://one.ubuntu.com/oauth/request/
[DEBUG 08:29:25.646] Response from request for auth url: oauth_token_secret=tBw0t8Mp8B4ZHx7gSQkkr7QF5mkCjb3WL22Zr6GtXNc617Xn99rTftQdv98kKkvBX1f86VxTbwb8VhD6&oauth_token=Xz32TMxkJxjZgtT9G3XQ&oauth_callback_confirmed=true
[DEBUG 08:29:25.655] Launching browser to authorize web sync: https://one.ubuntu.com/oauth/authorize/?oauth_token=Xz32TMxkJxjZgtT9G3XQ&oauth_callback=http%3a%2f%2flocalhost%3a8000%2ftomboy-web-sync%2f
[ERROR 08:29:25.805] Exception opening URL: The specified location is not supported
[ERROR 08:29:25.816] Error processing OAuth callback. Could be a sign that you pressed the button to reset the connection. Exception details:
[ERROR 08:29:25.841] System.ObjectDisposedException: The object was used after being disposed.
  at System.Net.HttpListener.CheckDisposed () [0x00000] in <filename unknown>:0
  at System.Net.HttpListener.EndGetContext (IAsyncResult asyncResult) [0x00000] in <filename unknown>:0
  at Tomboy.WebSync.WebSyncPreferencesWidget.<OnAuthButtonClicked>m__1 (IAsyncResult localResult) [0x00000] in <filename unknown>:0

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: tomboy 1.8.0-1ubuntu1.1
ProcVersionSignature: Ubuntu 3.0.0-13.22-generic 3.0.6
Uname: Linux 3.0.0-13-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Wed Nov 30 08:27:00 2011
InstallationMedia: Kubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
ProcEnviron:
 LANGUAGE=
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: tomboy
UpgradeStatus: No upgrade log present (probably fresh install)