ubiquity crashed with dbus.exceptions.DBusException in call_blocking(): org.freedesktop.DBus.Error.ServiceUnknown: The name :1.56 was not provided by any .service files

[POOLY]

MIGHT BE MY RUBBISH DVD COPY
I WILL GIVE IT ONE MORE GO again ....

ProblemType: Crash
DistroRelease: Ubuntu 17.04
Package: ubiquity 17.04.7
ProcVersionSignature: Ubuntu 4.10.0-13.15-lowlatency 4.10.1
Uname: Linux 4.10.0-13-lowlatency x86_64
ApportVersion: 2.20.4-0ubuntu2
Architecture: amd64
CasperVersion: 1.380
Date: Mon Mar 27 21:46:27 2017
DbusErrorAnalysis: no service file providing :1.56
ExecutablePath: /usr/lib/ubiquity/bin/ubiquity
InstallCmdLine: file=/cdrom/preseed/ubuntustudio.seed boot=casper only-ubiquity initrd=/casper/initrd.lz quiet splash ---
InterpreterPath: /usr/bin/python3.5
LiveMediaBuild: Ubuntu-Studio 17.04 "Zesty Zapus" - Beta amd64 (20170321)
ProcCmdline: /usr/bin/python3 /usr/lib/ubiquity/bin/ubiquity --only
ProcEnviron: Error: [Errno 13] Permission denied: '/proc/2003/environ'
PythonArgs: ['/usr/lib/ubiquity/bin/ubiquity', '--only']
SourcePackage: ubiquity
Title: ubiquity crashed with dbus.exceptions.DBusException in call_blocking(): org.freedesktop.DBus.Error.ServiceUnknown: The name :1.56 was not provided by any .service files
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Rex Tsai (chihchun)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 17.04 (zesty) reached end-of-life on January 13, 2018.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in and change the bug status to Confirmed.