Traceback (most recent call last):
  File "/usr/sbin/update-apt-xapian-index", line 101, in <module>
    if not indexer.setupIndexing(force=opts.force, system=opts.pkgfile is None):
  File "/usr/lib/python2.7/dist-packages/axi/indexer.py", line 466, in setupIndexing
    self.plugins = Plugins(progress=self.progress, system=system)
  File "/usr/lib/python2.7/dist-packages/axi/indexer.py", line 89, in __init__
    addon = Addon(fullname, **kw)
  File "/usr/lib/python2.7/dist-packages/axi/indexer.py", line 49, in __init__
    self.module = imp.load_source("axi.plugin_" + self.name, fname)
  File "/usr/share/apt-xapian-index/plugins/software-center.py", line 13, in <module>
    from softwarecenter.db.update import index_name
  File "/usr/share/software-center/softwarecenter/db/update.py", line 33, in <module>
    from softwarecenter.distro import get_distro
  File "/usr/share/software-center/softwarecenter/distro/__init__.py", line 26, in <module>
    from softwarecenter.utils import UnimplementedError, utf8
  File "/usr/share/software-center/softwarecenter/utils.py", line 863, in <module>
    from softwarecenter.db.pkginfo import get_pkg_info
ValueError: bad marshal data (unknown type code)