nautilus script-worker fails on 12.04

[François Rey]

After upgrading to version 0.7.0-1~precise4 (I also just upgraded to 12.04), I noticed my nautilus scripts were no longer working. In the command line the following errors is displayed:
Traceback (most recent call last):
  File "/usr/share/ubuntu-tweak/script-worker", line 31, in <module>
    from ubuntutweak.common.consts import *
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/common/consts.py", line 14, in <module>
    from gi.repository import GLib, Notify
  File "/usr/lib/python2.7/dist-packages/gi/__init__.py", line 23, in <module>
    from ._gi import _API, Repository
ImportError: could not import gobject (error was: ImportError('When using gi.repository you must not import static modules like "gobject". Please change all occurrences of "import gobject" to "from gi.repository import GObject".',))

$ python --version
Python 2.7.3
$ uname -a
Linux black 3.2.0-24-generic #37-Ubuntu SMP Wed Apr 25 08:43:22 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux