Issues starting client

Hello,

I'm having hard times launching the client. As far as I can understand from the readme this involves 2 steps:

~$/usr/lib/telepathy/telepathy-whosthere
tp-qt 0.9.3 DEBUG: Interface "org.freedesktop.Telepathy.Protocol.Interface.Addressing" plugged
tp-qt 0.9.3 DEBUG: Interface "org.freedesktop.Telepathy.Protocol.Interface.Avatars" plugged
tp-qt 0.9.3 DEBUG: Interface "org.freedesktop.Telepathy.Protocol.Interface.Presence" plugged
tp-qt 0.9.3 DEBUG: Protocol "whatsapp" added to CM
tp-qt 0.9.3 DEBUG: Registering protocol "whatsapp" at path "/org/freedesktop/Telepathy/ConnectionManager/whosthere/whatsapp" for CM "/org/freedesktop/Telepathy/ConnectionManager/whosthere" at bus name "org.freedesktop.Telepathy.ConnectionManager.whosthere"
tp-qt 0.9.3 DEBUG: Registered object "/org/freedesktop/Telepathy/ConnectionManager/whosthere/whatsapp" at bus name "org.freedesktop.Telepathy.ConnectionManager.whosthere"
tp-qt 0.9.3 DEBUG: Registering CM "/org/freedesktop/Telepathy/ConnectionManager/whosthere" at bus name "org.freedesktop.Telepathy.ConnectionManager.whosthere"
tp-qt 0.9.3 DEBUG: Registered object "/org/freedesktop/Telepathy/ConnectionManager/whosthere" at bus name "org.freedesktop.Telepathy.ConnectionManager.whosthere"
PythonInterface::initPython
PythonInterface::initPython exit

and:

~$ whosthere
disabled telepathy folks
openDb with version 8
Waiting for account manager
[12:16:49.833] State changed to disconnected
[12:16:50.791] Component.onCompleted
updateContacts results: 0
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
Xlib: extension "GLX" missing on display ":0.0".
Could not initialize GLX
Aborted
~$

Installed and upgraded all packages from your PPAs, running Quantal x64. What I don't understand though is whether I need Empathy installed. I saw in your video (although with awful quality) that you do the messaging via Empathy but nothing is mentioned about it in the readme, nor there is a dependency rising from the package installation towards empathy or gnome-online-accounts which seem to be the only way to setup an account in this ridiculous messenger. Can you provide a brief step-by-step tutorial for this? Even better - put it on the project page as I'm sure I'm not the only person lost.

Cheers,

Stefan