SourceEditor module encountered an error while loading

[agungnk]

Distribution: Ubuntu 11.10 oneiric
Application: Ubuntu Tweak 0.6.0+20111028
Desktop:ubuntu

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/main.py", line 436, in load_module
    page = module()
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/admins/sourceeditor.py", line 179, in __init__
    self.textview = SourceView(SOURCES_LIST)
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/admins/sourceeditor.py", line 49, in __init__
    self.update_content()
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/admins/sourceeditor.py", line 78, in update_content
    content = open(self.path).read()
IOError: [Errno 2] No such file or directory: '/etc/apt/sources.list'

[Ding Zhou (tualatrix)]

Oh, your sources.list is not available, please try to create it by running "software-properties-gtk".