Traceback (most recent call last):
  File "/usr/share/system-config-printer/applet.py", line 32, in <module>
    import cupshelpers.installdriver
  File "/usr/lib/python2.7/dist-packages/cupshelpers/__init__.py", line 47, in <module>
    from cupshelpers import				\
  File "/usr/lib/python2.7/dist-packages/cupshelpers/cupshelpers.py", line 24, in <module>
    import packagekit.client, packagekit.enums
ImportError: No module named packagekit.client