I think that this is an (UI?) issue in system-config-printer, because I
was now able to install the driver like this:

1) Start system-config-printer from terminal (I didn't test otherwise)
2) Select your printer from the list once detected and start installing the 
gutenprint driver
3) Hit CTRL-C (possible a couple of times) in the terminal when the "installing 
gutenprint" dialog gets stuck, select Cancel for the crash report etc
4) Now a "New Printer" dialog opens in which you can select your printer 
manufacturer and model
5) Choose your printer => Forward => Forward => Apply

The first crash again here:

-- clip --

Traceback (most recent call last):
  File "/usr/share/system-config-printer/newprinter.py", line 3678, in 
on_tvNPDownloadableDrivers_cursor_changed
    iter = model.get_iter (path)

-- clip --

These are the corresponding lines in the code:

-- clip --

        selection = widget.get_selection ()
        if selection == None:
            return

        model, iter = selection.get_selected ()
        if not iter:
            path, column = widget.get_cursor()
            iter = model.get_iter (path)

-- clip --

So in our case widget.get_cursor() returns so that path is None.

I assume that this happens, because the code expects user data from the
"New Printer" dialog, which is not opened.

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-control-center in Ubuntu.
https://bugs.launchpad.net/bugs/1248303

Title:
  Regression: installing gutenprint printer driver fails

Status in “gnome-control-center” package in Ubuntu:
  Incomplete
Status in “system-config-printer” package in Ubuntu:
  Confirmed

Bug description:
  Installing driver for Canon MP160 has worked perfectly from 12.04 to
  13.04, but not anymore in 13.10. The USB printer get detected
  correctly, but when installing the driver via "New Printer" dialog,
  only gutenprint can be selected and the "Installing driver gutenprint"
  dialog just gets stuck and nothing happens.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: gnome-control-center 1:3.6.3-0ubuntu44
  ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
  Uname: Linux 3.11.0-12-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2.1
  Architecture: amd64
  Date: Tue Nov  5 22:10:02 2013
  InstallationDate: Installed on 2013-10-20 (16 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 
(20131016.1)
  MarkForUpload: True
  SourcePackage: gnome-control-center
  UpgradeStatus: No upgrade log present (probably fresh install)
  usr_lib_gnome-control-center:
   activity-log-manager          0.9.7-0ubuntu4
   deja-dup                      27.3.1-0ubuntu1
   gnome-control-center-datetime 13.10.0+13.10.20131016.2-0ubuntu1
   gnome-control-center-signon   0.1.7~+13.10.20130724.1-0ubuntu1
   gnome-control-center-unity    1.3+13.10.20131004-0ubuntu1

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