upgrading from 10.04 to 12.04 - following problem showed up: An unresolvable problem occurred while calculating the upgrade: The package 'update-manager-kde' is marked for removal but it is in the removal blacklist.

[Liane Drößler]

I did not upgrade my system and used it a long time in an unupdated way. Now it's causing me more and more problems so I looked for a way to start a slow process becoming an updated system again. I started with upgrading to Ubuntu 12.04 and now it popped up this problem:

Could not calculate the upgrade

An unresolvable problem occurred while calculating the upgrade:
The package 'update-manager-kde' is marked for removal but it is in the removal blacklist.

 This can be caused by:
 * Upgrading to a pre-release version of Ubuntu
 * Running the current pre-release version of Ubuntu
 * Unofficial software packages not provided by Ubuntu

If none of this applies, then please report this bug using the command 'ubuntu-bug update-manager' in a terminal.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: update-manager 1:0.134.12.1
ProcVersionSignature: Ubuntu 2.6.32-74.142-generic 2.6.32.63+drm33.26
Uname: Linux 2.6.32-74-generic i686
NonfreeKernelModules: wl
Architecture: i386
Date: Thu Nov 16 12:01:29 2017
GConfNonDefault:
 /apps/update-manager/check_new_release_ignore=
 /apps/update-manager/first_run=false
 /apps/update-manager/show_versions=false
 /apps/update-manager/window_size=(600,517)
InstallationMedia: EasyPeasy 1.6
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: update-manager
VarLogDistupgradeAptclonesystemstate.tar.gz: Error: [Errno 13] Permission denied: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
VarLogDistupgradeTermlog: