可能重复：
软件中心打不开
有人知道我该如何让我的软件中心保持打开状态吗？昨晚尝试使用 Synaptic 后发生了这种情况，不知道是不是这个原因，但我也无法打开它（synaptic）。如果有帮助的话，当我尝试在终端中打开软件中心时，我得到：
$ software-center
2012-07-21 10:27:27,795 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None'
2012-07-21 10:27:27,800 - softwarecenter.db.database - INFO - open() database: path=None use_axi=True use_agent=True
2012-07-21 10:27:28,061 - softwarecenter.backend.reviews - WARNING - Could not get usefulness from server, no username in config file
2012-07-21 10:27:28,195 - softwarecenter.ui.gtk3.app - INFO - show_available_packages: search_text is '', app is None.
2012-07-21 10:27:28,480 - softwarecenter.db.pkginfo_impl.aptcache - INFO - aptcache.open()
Traceback (most recent call last):
File "/usr/share/software-center/softwarecenter/db/pkginfo_impl/aptcache.py", line 243, 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 149, in open
self._list.read_main_list()
SystemError: E:Type 'b' is not known on line 1 in source list /etc/apt/sources.list.d/danielrichter2007-grub-customizer-precise.list
2012-07-21 10:27:29,515 - 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 263, 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 1420, in run
self.show_available_packages(args)
File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 1350, in show_available_packages
self.view_manager.set_active_view(ViewPages.AVAILABLE)
File "/usr/share/software-center/softwarecenter/ui/gtk3/session/viewmanager.py", line 154, in set_active_view
view_widget.init_view()
File "/usr/share/software-center/softwarecenter/ui/gtk3/panes/availablepane.py", line 169, in init_view
self.apps_filter)
File "/usr/share/software-center/softwarecenter/ui/gtk3/views/catview_gtk.py", line 237, in __init__
self.build(desktopdir)
File "/usr/share/software-center/softwarecenter/ui/gtk3/views/catview_gtk.py", line 504, in build
self._build_homepage_view()
File "/usr/share/software-center/softwarecenter/ui/gtk3/views/catview_gtk.py", line 270, in _build_homepage_view
self._append_whats_new()
File "/usr/share/software-center/softwarecenter/ui/gtk3/views/catview_gtk.py", line 443, 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 432, 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 263, in __contains__
return self._cache.__contains__(k)
AttributeError: 'NoneType' object has no attribute '__contains__'
darnell@darnell-Inspiron-560:~$
答案1
打开你的终端并输入以下内容：
sudo apt-get update
sudo apt-get install app-install-data
然后再次尝试打开software-center。