The "No module named gi.repository" reported by Steve in comments 7 and 11 was found in other bug reports to mean that the package python-gi was not installed. Just like duplicity itself, python-gi can be installed as a dependency of the package deja-dup-backend-gvfs, that Michael mentions in comment 13 is installed when one first opens the GUI (deja-dup-preferences) and clicks the Install button.
Steve, you need to find out if this package deja-dup-backend-gvfs is installed, for instance by entering the following command in a terminal (press enter at the end):
apt-cache policy deja-dup-backend-gvfs
If it says "Installed: (none)", install it with the following command (again press enter to run):
sudo apt-get install deja-dup-backend-gvfs
If that doesn't solve your backup troubles, we may find why by inspecting the two files Vej tells you to create in comments 10 and 14.
@Steve, Vej:
The "No module named gi.repository" reported by Steve in comments 7 and 11 was found in other bug reports to mean that the package python-gi was not installed. Just like duplicity itself, python-gi can be installed as a dependency of the package deja-dup- backend- gvfs, that Michael mentions in comment 13 is installed when one first opens the GUI (deja-dup- preferences) and clicks the Install button.
Steve, you need to find out if this package deja-dup- backend- gvfs is installed, for instance by entering the following command in a terminal (press enter at the end):
apt-cache policy deja-dup- backend- gvfs
If it says "Installed: (none)", install it with the following command (again press enter to run):
sudo apt-get install deja-dup- backend- gvfs
If that doesn't solve your backup troubles, we may find why by inspecting the two files Vej tells you to create in comments 10 and 14.