Comment 1 for bug 44176

Thanks for your report. This is also bug 43125, and is definitely fixed in current
daily builds (http://cdimage.ubuntu.com/kubuntu/daily-live/current/); I've just checked the version in today's daily build and line 771 of /usr/lib/python2.4/site-packages/ubiquity/frontend/kde-ui.py doesn't match the traceback you cite, so I think you must have got an older version by accident.