Traceback (most recent call last):
  File "/usr/sbin/update-software-center", line 169, in <module>
    result = rebuild_database(pathname)
  File "/usr/share/software-center/softwarecenter/db/update.py", line 777, in rebuild_database
    cache = get_pkg_info()
  File "/usr/share/software-center/softwarecenter/db/pkginfo.py", line 179, in get_pkg_info
    pkginfo = AptCache()
  File "/usr/share/software-center/softwarecenter/db/pkginfo_impl/aptcache.py", line 112, in __init__
    self.apt_finished_stamp=Gio.File.new_for_path(self.APT_FINISHED_STAMP)
AttributeError: type object 'File' has no attribute 'new_for_path'