TypeError: join() argument after * must be a sequence

[bill]

When I tried using the Ubuntu 14 Backup program, it ran for a while and then stopped with the following error:
lsb_release -rd returns: Ubuntu 15.04
apt-cache policy duplicity returns:
  Installed: 0.7.01-1ubuntu1
  Candidate: 0.7.01-1ubuntu1
  Version table
  *** 0.7.01-1ubuntu1 0
           500 http:/ie.archive.ubuntu.com/ubuntu/ vivid/main amd64 Packages
           100 /var/lib/dpkg/status

===================== start of error window text ===============
Traceback (most recent call last):
  File "/usr/bin/duplicity", line 1500, in <module>
    with_tempdir(main)
  File "/usr/bin/duplicity", line 1494, in with_tempdir
    fn()
  File "/usr/bin/duplicity", line 1343, in main
    do_backup(action)
  File "/usr/bin/duplicity", line 1464, in do_backup
    full_backup(col_stats)
  File "/usr/bin/duplicity", line 527, in full_backup
    bytes_written = dummy_backup(tarblock_iter)
  File "/usr/bin/duplicity", line 202, in dummy_backup
    while tarblock_iter.next():
  File "/usr/lib/python2.7/dist-packages/duplicity/diffdir.py", line 519, in next
    result = self.process(self.input_iter.next())
  File "/usr/lib/python2.7/dist-packages/duplicity/diffdir.py", line 193, in get_delta_iter
    log.Debug(_("Comparing %s and %s") % (new_path and util.uindex(new_path.index),
  File "/usr/lib/python2.7/dist-packages/duplicity/util.py", line 69, in uindex
    return os.path.join(*map(ufn, index))
TypeError: join() argument after * must be a sequence, not itertools.imap

===================== end of error window text ===============

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: deja-dup 32.0-0ubuntu5
ProcVersionSignature: Ubuntu 3.19.0-30.34-generic 3.19.8-ckt6
Uname: Linux 3.19.0-30-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.5
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Oct 10 17:47:45 2015
ExecutablePath: /usr/bin/deja-dup-preferences
InstallationDate: Installed on 2015-09-07 (32 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
ProcEnviron:
 LANGUAGE=en_IE:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_IE.UTF-8
 SHELL=/bin/bash
SourcePackage: deja-dup
UpgradeStatus: No upgrade log present (probably fresh install)

[Vej (vej)]

Thank you for reporting this bug to Ubuntu. Ubuntu 15.04 reached EOL on February 4, 2016 .
See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases

I've tried recreating this bug with Ubuntu 16.04 and was unable to, given the information you've provided. Please upgrade to a supported release and re-test. If the bug is still reproducible, increase the verbosity of the steps to recreate it so we can try again.

Do feel free to report any other bugs you may find.

[Launchpad Janitor (janitor)]

[Expired for deja-dup (Ubuntu) because there has been no activity for 60 days.]