Comment 11 for bug 768363

I think I'm experiencing the same bug. Kubuntu 11.04, 64-bit, KDE 4.6.2. Terminal output:

ann@ann-Dell-XPS410:~$ kdesu software-properties-kde
QInotifyFileSystemWatcherEngine::addPaths: inotify_add_watch failed: No such file or directory
QFileSystemWatcher: failed to add paths: /home/ann/.config/ibus/bus
Traceback (most recent call last):
  File "/usr/bin/software-properties-kde", line 122, in <module>
    app = SoftwarePropertiesKDE(datadir=data_dir, options=options, file=file, attachWinID=attachWinID)
  File "/usr/lib/python2.7/dist-packages/softwareproperties/kde/SoftwarePropertiesKDE.py", line 129, in __init__
    self.init_distro()
  File "/usr/lib/python2.7/dist-packages/softwareproperties/kde/SoftwarePropertiesKDE.py", line 258, in init_distro
    checkbox = QCheckBox(utf8(template.description),
  File "/usr/lib/python2.7/dist-packages/softwareproperties/kde/I18nHelper.py", line 46, in utf8
    return unicode(str, 'latin1')
TypeError: coercing to Unicode: need string or buffer, NoneType found
Application asked to unregister timer 0x22000009 which is not registered in this thread. Fix application.
Application asked to unregister timer 0x63000006 which is not registered in this thread. Fix application.