Partial upgrade. Segmentation fault (core dumped)

[Jorma Hytonen]

KDE (Plasma) missing if I do dist-upgrade
The following packages will be REMOVED:
  bluedevil gir1.2-webkit2-4.0 kde-config-screenlocker kinfocenter kscreen kwin-common kwin-x11
  libkf5waylandserver5 libkscreenlocker5 libkwin4-effect-builtins1 libkwineffects9 libwebkit2gtk-4.0-37 milou
  plasma-desktop plasma-discover plasma-framework plasma-pa plasma-workspace qml-module-org-kde-kirigami
  xserver-xorg-input-all xserver-xorg-input-all-lts-wily xserver-xorg-input-evdev xserver-xorg-input-synaptics
  xserver-xorg-input-vmmouse xserver-xorg-input-wacom xserver-xorg-video-all xserver-xorg-video-all-lts-wily
  xserver-xorg-video-amdgpu xserver-xorg-video-ati xserver-xorg-video-fbdev xserver-xorg-video-nouveau
  xserver-xorg-video-radeon xserver-xorg-video-vesa xserver-xorg-video-vmware zenity

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.23
ProcVersionSignature: Ubuntu 4.4.0-109.132-generic 4.4.98
Uname: Linux 4.4.0-109-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.20.1-0ubuntu2.15
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: KDE
Date: Thu Jan 18 13:32:51 2018
InstallationDate: Installed on 2016-02-22 (695 days ago)
InstallationMedia: Ubuntu 14.04.4 LTS "Trusty Tahr" - Release amd64 (20160217.1)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: No upgrade log present (probably fresh install)
VarLogDistupgradeTermlog: