Comment 2 for bug 1309895

    libwayland-egl1-mesa:amd64 Vereisten on libegl1-mesa [ amd64 ] < 10.2.0~git20140331.ec4b8d16-0ubuntu0ricotz~saucy > ( libs ) (= 10.1.0-4ubuntu5) can't be satisfied!

you do have an unofficial libwayland-egl1-mesa installed which was blocking the upgrade of kde-window-manager, so to fullfill the other requirements the upgrader decided to remove kde-window-manager as there was no way to upgrade it. to resolve this situation you'll have to downgrade libwayland-egl1-mesa. if you need help with that please ask on a forum or on IRC.