Traceback (most recent call last):
  File "/usr/share/software-center/softwarecenter/apt/aptcache.py", line 107, in open
    self._cache = apt.Cache(GtkMainIterationProgress())
  File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 89, in __init__
    self.open(progress)
  File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 131, in open
    self._list.read_main_list()
SystemError: E:Malformed line 1 in source list /etc/apt/sources.list.d/michael-gruz-canon___-natty.list (URI)