package duplicity 0.6.23-1ubuntu4 failed to install/upgrade: subprocess new pre-removal script returned error exit status 1

[Alfonso Gonzalez]

I've got this error when I tried to update the system:
Errors were encountered while processing:
 duplicity

Current status: 1 update [-29].

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: duplicity 0.6.23-1ubuntu4
ProcVersionSignature: Ubuntu 3.13.0-27.50-generic 3.13.11
Uname: Linux 3.13.0-27-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
Date: Tue Jun 3 09:41:30 2014
DuplicateSignature: package:duplicity:0.6.23-1ubuntu4:subprocess new pre-removal script returned error exit status 1
ErrorMessage: subprocess new pre-removal script returned error exit status 1
InstallationDate: Installed on 2013-02-10 (477 days ago)
InstallationMedia: Linux Mint 14 "Nadia" - Release amd64 (20121120)
SourcePackage: duplicity
Title: package duplicity 0.6.23-1ubuntu4 failed to install/upgrade: subprocess new pre-removal script returned error exit status 1
UpgradeStatus: Upgraded to petra on 2014-03-30 (64 days ago)

[Alfonso Gonzalez (alfonsog)]

Full update log:
The following packages will be upgraded:
  duplicity
1 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/199 kB of archives. After unpacking 0 B will be used.
Do you want to continue? [Y/n/?] y
(Reading database ... 651380 files and directories currently installed.)
Preparing to unpack .../duplicity_0.6.23-1ubuntu4.1_amd64.deb ...
  File "/usr/bin/pyclean", line 63
    except (IOError, OSError), e:
                             ^
SyntaxError: invalid syntax
dpkg: warning: subprocess old pre-removal script returned error exit status 1
dpkg: trying script from the new package instead ...
  File "/usr/bin/pyclean", line 63
    except (IOError, OSError), e:
                             ^
SyntaxError: invalid syntax
dpkg: error processing archive /var/cache/apt/archives/duplicity_0.6.23-1ubuntu4.1_amd64.deb (--unpack):
 subprocess new pre-removal script returned error exit status 1
Traceback (most recent call last):
  File "/usr/bin/pycompile", line 35, in <module>
    from debpython.version import SUPPORTED, debsorted, vrepr, \
  File "/usr/share/python/debpython/version.py", line 24, in <module>
    from ConfigParser import SafeConfigParser
ImportError: No module named 'ConfigParser'
dpkg: error while cleaning up:
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 /var/cache/apt/archives/duplicity_0.6.23-1ubuntu4.1_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
A package failed to install. Trying to recover:
dpkg: error processing package duplicity (--configure):
 package is in a very bad inconsistent state; you should
 reinstall it before attempting configuration
Errors were encountered while processing:
 duplicity