SystemError: E:Malformed line 1 in source list /etc/apt/sources.list.d/apticons.list (dist parse)

[Michael Smith]

Update manager does not get repository list

Distribution: Ubuntu 11.04 natty
Application: Ubuntu Tweak 0.5.13
Desktop: gnome
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/ubuntutweak/mainwindow.py",
  line 502, in setup_notebook page = module()
File "/usr/lib/python2.7/dist-packages/ubuntutweak/modules/updatemanager.py",
  line 44, in __init__ self.update_list()
File "/usr/lib/python2.7/dist-packages/ubuntutweak/modules/updatemanager.py",
  line 59, in update_list PACKAGE_WORKER.update_apt_cache(init=True)
File "/usr/lib/python2.7/dist-packages/ubuntutweak/common/package.py",
  line 226, in update_apt_cache self.cache = apt.Cache()
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/apticons.list (dist parse)

[Ding Zhou (tualatrix)]

Hello, Please edit your sources.list to make it correctly.

If you don't know how to edit, please do by following step:

 1. Open your terminal
 2. run this command:

     sudo gedit /etc/apt/sources.list

 3. Check the line 1 and correct it.