nagstamon.py crashed with AttributeError in <lambda>(): 'Settings' object has no attribute 'selected_server'

[Dimiter "Arruor" Nikov]

Nagstamon has crashed when adding server settings

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: nagstamon 0.9.8-1
ProcVersionSignature: Ubuntu 3.2.0-9.16-generic-pae 3.2.1
Uname: Linux 3.2.0-9-generic-pae i686
NonfreeKernelModules: nvidia
ApportVersion: 1.90-0ubuntu2
Architecture: i386
Date: Wed Jan 18 12:13:40 2012
ExecutablePath: /usr/share/nagstamon/nagstamon.py
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/nagstamon
PythonArgs: ['/usr/bin/nagstamon']
SourcePackage: nagstamon
Title: nagstamon.py crashed with AttributeError in <lambda>(): 'Settings' object has no attribute 'selected_server'
Traceback:
 Traceback (most recent call last):
   File "/usr/share/nagstamon/Nagstamon/GUI.py", line 2083, in <lambda>
     "button_edit_server": lambda e: EditServer(servers=self.servers, output=self.output, server=self.selected_server, settingsdialog=self, conf=self.conf),
 AttributeError: 'Settings' object has no attribute 'selected_server'
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin audio backup cdrom dialout lpadmin plugdev root sambashare vboxusers video www-data