Software Center Crash

[wumpini]

I just installed Ubuntu 12.04 and my software center keeps crashing. Also, I cannot update using sudo apt-get update. Here is what happens when I type software-center in terminal:


fauzi@ubuntu:~$ software-center
2012-09-07 19:41:13,378 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None'
2012-09-07 19:41:13,388 - softwarecenter.db.database - INFO - open() database: path=None use_axi=True use_agent=True
2012-09-07 19:41:13,651 - softwarecenter.backend.reviews - WARNING - Could not get usefulness from server, no username in config file
Traceback (most recent call last):
File "/usr/share/software-center/softwarecenter/db/pkginfo_impl/aptcache.py", line 242, in open
self._cache = apt.Cache(GtkMainIterationProgress())
File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 102, in __init__
self.open(progress)
File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 145, in open
self._cache = apt_pkg.Cache(progress)
SystemError: E:Encountered a section with no Package: header, E:Problem with MergeList /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_precise_multiverse _binary-amd64_Packages, E:The package lists or status file could not be parsed or opened.
2012-09-07 19:41:15,388 - softwarecenter.db.enquire - ERROR - _get_estimate_nr_apps_and_nr_pkgs failed
Traceback (most recent call last):
File "/usr/share/software-center/softwarecenter/db/enquire.py", line 115, in _get_estimate_nr_apps_and_nr_pkgs
tmp_matches = enquire.get_mset(0, len(self.db), None, xfilter)
File "/usr/share/software-center/softwarecenter/db/appfilter.py", line 89, in __call__
if (not pkgname in self.cache and
File "/usr/share/software-center/softwarecenter/db/pkginfo_impl/aptcache.py", line 262, in __contains__
return self._cache.__contains__(k)
AttributeError: 'NoneType' object has no attribute '__contains__'
Traceback (most recent call last):
File "/usr/bin/software-center", line 176, in <module>
app.run(args)
File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1341, in run
self.show_available_packages(args)
File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1271, in show_available_packages
self.view_manager.set_active_view(ViewPages.AVAILA BLE)
File "/usr/share/software-center/softwarecenter/ui/gtk3/session/viewmanager.py", line 149, in set_active_view
view_widget.init_view()
File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/availablepane.py", line 165, in init_view
self.apps_filter)
File "/usr/share/software-center/softwarecenter/ui/gtk3/views/catview_gtk.py", line 240, in __init__
self.build(desktopdir)
File "/usr/share/software-center/softwarecenter/ui/gtk3/views/catview_gtk.py", line 491, in build
self._build_homepage_view()
File "/usr/share/software-center/softwarecenter/ui/gtk3/views/catview_gtk.py", line 266, in _build_homepage_view
self._append_whats_new()
File "/usr/share/software-center/softwarecenter/ui/gtk3/views/catview_gtk.py", line 430, in _append_whats_new
whats_new_cat = self._update_whats_new_content()
File "/usr/share/software-center/softwarecenter/ui/gtk3/views/catview_gtk.py", line 419, in _update_whats_new_content
docs = whats_new_cat.get_documents(self.db)
File "/usr/share/software-center/softwarecenter/db/categories.py", line 124, in get_documents
nonblocking_load=False)
File "/usr/share/software-center/softwarecenter/db/enquire.py", line 317, in set_query
self._blocking_perform_search()
File "/usr/share/software-center/softwarecenter/db/enquire.py", line 212, in _blocking_perform_search
matches = enquire.get_mset(0, self.limit, None, xfilter)
File "/usr/share/software-center/softwarecenter/db/appfilter.py", line 89, in __call__
if (not pkgname in self.cache and
File "/usr/share/software-center/softwarecenter/db/pkginfo_impl/aptcache.py", line 262, in __contains__
return self._cache.__contains__(k)
AttributeError: 'NoneType' object has no attribute '__contains__'

[oldos2er]

Can you post the output from
sudo apt-get update ?