This was the same issue with 14.04LTS and I thought that we solved this issue for 14.10. Kubuntu docs installs all languages except Turkish even though it is 100% complete.
Installed files:
/usr/share/doc/kde/HTML/ca/kubuntu/common
/usr/share/doc/kde/HTML/ca/kubuntu/index.cache.bz2
/usr/share/doc/kde/HTML/ca/kubuntu/index.docbook
/usr/share/doc/kde/HTML/ca/kubuntu/keyboard.png
/usr/share/doc/kde/HTML/ca/kubuntu/kubuntu1311.png
/usr/share/doc/kde/HTML/ca/kubuntu/kubuntudefault.png
/usr/share/doc/kde/HTML/ca/kubuntu/kubuntudisksetup.png
/usr/share/doc/kde/HTML/ca/kubuntu/kubuntuinstallwelcome.png
/usr/share/doc/kde/HTML/ca/kubuntu/manual.png
/usr/share/doc/kde/HTML/ca/kubuntu/prepare.png
/usr/share/doc/kde/HTML/ca/kubuntu/timezone.png
/usr/share/doc/kde/HTML/ca/kubuntu/userinfo.png
/usr/share/doc/kde/HTML/da/kubuntu/common
/usr/share/doc/kde/HTML/da/kubuntu/index.cache.bz2
/usr/share/doc/kde/HTML/da/kubuntu/index.docbook
/usr/share/doc/kde/HTML/da/kubuntu/keyboard.png
/usr/share/doc/kde/HTML/da/kubuntu/kubuntu1311.png
/usr/share/doc/kde/HTML/da/kubuntu/kubuntudefault.png
/usr/share/doc/kde/HTML/da/kubuntu/kubuntudisksetup.png
/usr/share/doc/kde/HTML/da/kubuntu/kubuntuinstallwelcome.png
/usr/share/doc/kde/HTML/da/kubuntu/manual.png
/usr/share/doc/kde/HTML/da/kubuntu/prepare.png
/usr/share/doc/kde/HTML/da/kubuntu/timezone.png
/usr/share/doc/kde/HTML/da/kubuntu/userinfo.png
/usr/share/doc/kde/HTML/el/kubuntu/common
/usr/share/doc/kde/HTML/el/kubuntu/index.cache.bz2
/usr/share/doc/kde/HTML/el/kubuntu/index.docbook
/usr/share/doc/kde/HTML/el/kubuntu/keyboard_el.png
/usr/share/doc/kde/HTML/el/kubuntu/kubuntu1311.png
/usr/share/doc/kde/HTML/el/kubuntu/kubuntudefault.png
/usr/share/doc/kde/HTML/el/kubuntu/kubuntudisksetup_el.png
/usr/share/doc/kde/HTML/el/kubuntu/kubuntuinstallwelcome_el.png
/usr/share/doc/kde/HTML/el/kubuntu/manual.png
/usr/share/doc/kde/HTML/el/kubuntu/prepare_el.png
/usr/share/doc/kde/HTML/el/kubuntu/timezone_el.png
/usr/share/doc/kde/HTML/el/kubuntu/userinfo_el.png
/usr/share/doc/kde/HTML/en/kubuntu/common
/usr/share/doc/kde/HTML/en/kubuntu/index.cache.bz2
/usr/share/doc/kde/HTML/en/kubuntu/index.docbook
/usr/share/doc/kde/HTML/en/kubuntu/keyboard.png
/usr/share/doc/kde/HTML/en/kubuntu/kubuntu1311.png
/usr/share/doc/kde/HTML/en/kubuntu/kubuntudefault.png
/usr/share/doc/kde/HTML/en/kubuntu/kubuntudisksetup.png
/usr/share/doc/kde/HTML/en/kubuntu/kubuntuinstallwelcome.png
/usr/share/doc/kde/HTML/en/kubuntu/manual.png
/usr/share/doc/kde/HTML/en/kubuntu/prepare.png
/usr/share/doc/kde/HTML/en/kubuntu/timezone.png
/usr/share/doc/kde/HTML/en/kubuntu/userinfo.png
/usr/share/doc/kde/HTML/pl/kubuntu/common
/usr/share/doc/kde/HTML/pl/kubuntu/index.cache.bz2
/usr/share/doc/kde/HTML/pl/kubuntu/index.docbook
/usr/share/doc/kde/HTML/pl/kubuntu/keyboard.png
/usr/share/doc/kde/HTML/pl/kubuntu/kubuntu1311.png
/usr/share/doc/kde/HTML/pl/kubuntu/kubuntudefault.png
/usr/share/doc/kde/HTML/pl/kubuntu/kubuntudisksetup.png
/usr/share/doc/kde/HTML/pl/kubuntu/kubuntuinstallwelcome.png
/usr/share/doc/kde/HTML/pl/kubuntu/manual.png
/usr/share/doc/kde/HTML/pl/kubuntu/prepare.png
/usr/share/doc/kde/HTML/pl/kubuntu/timezone.png
/usr/share/doc/kde/HTML/pl/kubuntu/userinfo.png
/usr/share/doc/kde/HTML/ro/kubuntu/common
/usr/share/doc/kde/HTML/ro/kubuntu/index.cache.bz2
/usr/share/doc/kde/HTML/ro/kubuntu/index.docbook
/usr/share/doc/kde/HTML/ro/kubuntu/kubuntudefault.png
/usr/share/doc/kde/HTML/uk/kubuntu/common
/usr/share/doc/kde/HTML/uk/kubuntu/index.cache.bz2
/usr/share/doc/kde/HTML/uk/kubuntu/index.docbook
/usr/share/doc/kde/HTML/uk/kubuntu/keyboard.png
/usr/share/doc/kde/HTML/uk/kubuntu/kubuntu1311.png
/usr/share/doc/kde/HTML/uk/kubuntu/kubuntudefault.png
/usr/share/doc/kde/HTML/uk/kubuntu/kubuntudisksetup.png
/usr/share/doc/kde/HTML/uk/kubuntu/kubuntuinstallwelcome.png
/usr/share/doc/kde/HTML/uk/kubuntu/manual.png
/usr/share/doc/kde/HTML/uk/kubuntu/prepare.png
/usr/share/doc/kde/HTML/uk/kubuntu/timezone.png
/usr/share/doc/kde/HTML/uk/kubuntu/userinfo.png
/usr/share/doc/kubuntu-docs/changelog.gz
/usr/share/doc/kubuntu-docs/copyright
/usr/share/icons/hicolor/16x16/apps/kubuntu.png
/usr/share/kde4/apps/khelpcenter/plugins/kubuntu/.directory
Thank you for taking the time to report this bug and helping to make Kubuntu better. We are sorry that we do not always have the capacity to look at all reported bugs in a timely manner. There have been many changes in Kubuntu since that time you reported the bug and your problem may have been fixed with some of the updates. It would help us a lot if you could test it on a currently supported Kubuntu version. If you test it and it is still an issue, kindly upload the updated logs by running only once:
apport-collect 1398798
and any other logs that are relevant for this particular issue.