duplicity fails on ERROR 30 TypeError

[Serge Stroobandt]

Hi there,

Since recently, I am experiencing a problem with duplicity.
On an up-to-date bubba excito machine, duplicity fails to make a backup
on an ext3 mount and dumps the following error.

The only thing that I might have done wrong is that I have manually removed
previously failed backup archives because the disk was full.

Apparently, I am not the only one with this error.
See also deja-dup forum: https://bugs.launchpad.net/deja-dup/+bug/545486
What should I do to get my automated backups running again ???

NOTICE 1
. Reading globbing filelist /home/admin/.backup/weekly/excludeglob.list

NOTICE 1
. Reading globbing filelist /home/admin/.backup/weekly/includeglob.list

INFO 1
. Using temporary directory /tmp/duplicity-sc4Wlo-tempdir

ERROR 30 TypeError
. Traceback (most recent call last):
. File "/usr/bin/duplicity", line 589, in ?
. with_tempdir(main)
. File "/usr/bin/duplicity", line 582, in with_tempdir
. fn()
. File "/usr/bin/duplicity", line 510, in main
. globals.archive_dir).set_values()
. File "/usr/lib/python2.4/site-packages/duplicity/collections.py", line 557,
in set_values
. self.warn(sig_chain_warning)
. File "/usr/lib/python2.4/site-packages/duplicity/collections.py", line 626,
in warn
. + "\n" + "\n".join(self.other_sig_names),
. TypeError: bad operand type for unary +
.

[Serge Stroobandt (serge-stroobandt)]

This is in duplicity 0.5.11