Kepas appear only in English, can't change interface language. Thank you P.D.: Recently, I discover "KDEnlive" has no entries in KDE bugs system. "Kepas", neither. It's difficult for a simple KDE user to share bugs or issues when all KDE apps are not centraliced in one place to communicate with development team.
The program "kepas" is no longer maintained since a long time. See http://websvn.kde.org/?revision=1272791&view=revision The bugzilla entry for "kepas" is disabled, unless someone steps up to maintain it. See https://bugs.kde.org/buglist.cgi?product=kepas
It's a pity to ear those news. Really KEPAS is an interesting and collaborative tools for LANs. So, if is not maintained, why to compile in each new version?
We do not compile it, but maybe your distribution supplier still does.
They do (is OpenSUSE) and it works fine, but it's not translated. : (