Can't explain the error message for duplicity:
ddd@T400:~$ duplicity -vi ~/Dropfold swift://bkp_dropbox Traceback (most recent call last): File "/usr/bin/duplicity", line 61, in <module> from duplicity import log ImportError: No module named duplicity
It is just a vanilla install from apt. It was working fine on Ubuntu 14.04. Looks like the installation is failing (I have already tried to remove it and to reinstall it).
Any idea? Thx.