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. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/768363 Title: Not able to change software origins in software-properties-kde - TypeError: coercing to Unicode: need string or buffer, NoneType found -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs