Comment 20 for bug 877631

i am using deja-dup 20.1-0ubuntu0.2 (oneiric-proposed) to fix the problem , but the bug is śtill there

i am using ubuntu 11.10 32 bit with german Language (de)
i had used a password for encryption ( letters a-z , 0-9, and special char "-" )
i choose to keep the password
i choose to keep the backup one month ( maybe i changed to this while backup was running )
i interrupted backup
i tried to resume next day

------------ Error Message --------------
Traceback (most recent call last):
  File "/usr/bin/duplicity", line 1359, in <module>
    with_tempdir(main)
  File "/usr/bin/duplicity", line 1342, in with_tempdir
    fn()
  File "/usr/bin/duplicity", line 1222, in main
    globals.archive_dir).set_values()
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 684, in set_values
    self.get_backup_chains(partials + backend_filename_list)
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 807, in get_backup_chains
    map(add_to_sets, filename_list)
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 797, in add_to_sets
    if set.add_filename(filename):
  File "/usr/lib/python2.7/dist-packages/duplicity/collections.py", line 94, in add_filename
    (self.volume_name_dict, filename)
AssertionError: ({1: u'duplicity-full.20111107T184703Z.vol1.difftar.gpg', 10: u'duplicity-full.20111107T184703Z.vol10.difftar.gpg', 11: u'duplicity-full.20111107T184703Z.vol11.difftar.gpg', 12: u'duplicity-full.20111107T184703Z.vol12.difftar.gpg', 13: u'duplicity-full.20111107T184703Z.vol13.difftar.gpg', 14: u'duplicity-full.20111107T184703Z.vol14.difftar.gpg', 15: u'duplicity-full.20111107T184703Z.vol15.difftar.gpg', 16: u'duplicity-full.20111107T184703Z.vol16.difftar.gpg', 17: u'duplicity-full.20111107T184703Z.vol17.difftar.gpg', 18: u'duplicity-full.20111107T184703Z.vol18.difftar.gpg', 19: u'duplicity-full.20111107T184703Z.vol19.difftar.gpg', 20: u'duplicity-full.20111107T184703Z.vol20.difftar.gpg', 21: u'duplicity-full.20111107T184703Z.vol21.difftar.gpg', 22: u'duplicity-full.20111107T184703Z.vol22.difftar.gpg', 23: u'duplicity-full.20111107T184703Z.vol23.difftar.gpg'}, u'duplicity-full.20111107T184703Z.vol23.difftar.gz')