upgrade installer

[Cliffm]

Could not calculate the upgrade

An unresolvable problem occurred while calculating the upgrade.

 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 ubuntu-release-upgrader-core' in a terminal.

ubuntu-bug ubuntu-release-upgrader-core
Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged.
cjm@cliffm:~$ Could not calculate the upgrade
Could: command not found
cjm@cliffm:~$
cjm@cliffm:~$ An unresolvable problem occurred while calculating the upgrade.
An: command not found
cjm@cliffm:~$
cjm@cliffm:~$ This can be caused by:
This: command not found
cjm@cliffm:~$ * Upgrading to a pre-release version of Ubuntu
Address_book.odb: command not found
cjm@cliffm:~$ * Running the current pre-release version of Ubuntu
Address_book.odb: command not found
cjm@cliffm:~$ * Unofficial software packages not provided by Ubuntu
Address_book.odb: command not found

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.24
ProcVersionSignature: Ubuntu 4.13.0-36.40~16.04.1-generic 4.13.13
Uname: Linux 4.13.0-36-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.15
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: GNOME
Date: Wed Feb 28 14:54:10 2018
InstallationDate: Installed on 2017-10-26 (125 days ago)
InstallationMedia: Ubuntu-GNOME 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2018-02-28 (0 days ago)
VarLogDistupgradeTermlog:

mtime.conffile..etc.update-manager.release-upgrades: 2017-10-25T18:07:23.000415

[Brian Murray (brian-murray)]

This may have something to do with the vim packages you have install from a third party package provider.

vim 2:8.0.1542-0york1~16.04 0
vim-common 2:8.0.1542-0york1~16.04 0
vim-runtime 2:8.0.1542-0york1~16.04 1

Please remove these using the tool 'ppa-purge' and then try the upgrade again.

[Launchpad Janitor (janitor)]

[Expired for ubuntu-release-upgrader (Ubuntu) because there has been no activity for 60 days.]