always reports 'not found (404)' in client when calling any number

[iGadget]

This morning I tried sflphone again after not being able to get it working on 11.10. Before noticing sflphone being present in the repositories, I added the PPA as per http://sflphone.org/download/stable-release.

When starting SFL phone and configuring properly, it actually worked once.
Our VoIP system is configured in such a way that you have to 'log in' each device, also if it's a soft phone.
This is done by dialing *1 and then entering my account's extension using the dialpad.
Dialing *1 worked - I could hear the system asking me for my extension. Then I noticed the dialpad was not working, the system did not respond to my input. After changing DTMF to 'SIP' in the audio settings of the account, this was fixed.

I called *1 again, entered my extension and I heard the system telling me that I had succesfully logged in. Then I got a crash report window, telling me sflphoned had crashed. Unfortunately I was not allowed to use Apport to automatically file this bug, because the packages came from the PPA (which contains the same version however).

After this crash, I could not dial any number anymore. The client always reported 'not found (404)'.
I figured sflphoned might not be running anymore, but this was not the case. I then killed the process manually and restarted sflphoned.

The result was the same - with any number I tried to dial, the 'not found (404)' error showed. I immediately checked the account settings, but the status was still 'Registered', so this could not be the problem.

I then found out that sflphone is also in the repo's, so I removed the PPA version and installed the repo version instead.

However, the result is still the same. I still get the 'not found (404)' error on any number I try to call.

If there is anything I can do / try / report to help fix this issue, please let me know.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: sflphone-daemon 1.0.2-1ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
ApportVersion: 2.0.1-0ubuntu4
Architecture: amd64
Date: Wed Apr 18 09:46:34 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120328)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: sflphone
UpgradeStatus: No upgrade log present (probably fresh install)

[iGadget (igadget)]

When starting sflphoned from a terminal and then starting sflphone-client-gnome, I see the following appearing in the terminal window when trying to dial any number:

warning: The VAD has been replaced by a hack pending a complete rewrite

Nothing else appears (except for the 'not found (404)' in the client)