Comment 1 for bug 149228

[Xubuntu Gutsy]
Same problem here...
When I try to reconfigure Add/Remove::
$ sudo dpkg-reconfigure gnome-app-install
Caching application data...
Skipped k3dsurf.desktop: does not include a menu name
Generating mime/codec maps...

Then when I try to start it::
$ sudo gnome-app-install
Traceback (most recent call last):
File "/usr/bin/gnome-app-install", line 30, in <module>
main()
File "/usr/lib/python2.5/site-packages/AppInstall/activation.py", line 435, in main
from AppInstall import AppInstall
File "/usr/lib/python2.5/site-packages/AppInstall/AppInstall.py", line 62, in <module>
import distros
File "/usr/lib/python2.5/site-packages/AppInstall/distros/__init__.py", line 2, in <module>
from Ubuntu import Distribution
File "/usr/lib/python2.5/site-packages/AppInstall/distros/Ubuntu.py", line 1, in <module>
import Default
File "/usr/lib/python2.5/site-packages/AppInstall/distros/Default.py", line 1, in <module>
from AppInstall.Menu import SHOW_ALL, SHOW_ONLY_SUPPORTED, SHOW_ONLY_FREE, SHOW_ONLY_MAIN, SHOW_ONLY_PROPRIETARY, SHOW_ONLY_THIRD_PARTY, SHOW_ONLY_INSTALLED
File "/usr/lib/python2.5/site-packages/AppInstall/Menu.py", line 18, in <module>
import gst
File "/usr/lib/python2.5/site-packages/gst-0.10/gst/__init__.py", line 144, in <module>
from _gst import *
RuntimeError: can't initialize module gst: Error re-scanning registry , child terminated by signal