Comment 12 for bug 703142

Here's 0.7.04 with the same issue!!!

Copying duplicity-full-signatures.20150920T135054Z.sigtar.gpg.1 to local cache.
Deleting /var/folders/sn/lw4b5p6s6793ghngffqsy8cc0000gn/T/duplicity-MJR9My-tempdir/mktemp-7K3KaR-2
Deleting /var/folders/sn/lw4b5p6s6793ghngffqsy8cc0000gn/T/duplicity-MJR9My-tempdir/mktemp-EAoKyg-3
Copying duplicity-full-signatures.20150920T135054Z.sigtar.gpg.2 to local cache.
Deleting /var/folders/sn/lw4b5p6s6793ghngffqsy8cc0000gn/T/duplicity-MJR9My-tempdir/mktemp-8hl7lL-4
Deleting /var/folders/sn/lw4b5p6s6793ghngffqsy8cc0000gn/T/duplicity-MJR9My-tempdir/mktemp-kJsdDT-5
Traceback (most recent call last):
  File "/usr/local/Cellar/duplicity/0.7.04_1/libexec/bin/duplicity", line 1528, in <module>
    with_tempdir(main)
  File "/usr/local/Cellar/duplicity/0.7.04_1/libexec/bin/duplicity", line 1522, in with_tempdir
    fn()
  File "/usr/local/Cellar/duplicity/0.7.04_1/libexec/bin/duplicity", line 1376, in main
    do_backup(action)
  File "/usr/local/Cellar/duplicity/0.7.04_1/libexec/bin/duplicity", line 1401, in do_backup
    globals.archive_dir).set_values()
  File "/usr/local/Cellar/duplicity/0.7.04_1/libexec/lib/python2.7/site-packages/duplicity/collections.py", line 721, in set_values
    backup_chains)
  File "/usr/local/Cellar/duplicity/0.7.04_1/libexec/lib/python2.7/site-packages/duplicity/collections.py", line 734, in set_matched_chain_pair
    sig_chains = sig_chains and self.get_sorted_chains(sig_chains)
  File "/usr/local/Cellar/duplicity/0.7.04_1/libexec/lib/python2.7/site-packages/duplicity/collections.py", line 951, in get_sorted_chains
    assert len(chain_list) == 2
AssertionError