The traceback I'm getting makes me believe I have to reset all my repositories on my Ubuntu 12.04 installation. How do I do that?
Traceback (most recent call last):
File "/usr/bin/add-apt-repository", line 183, in <module>
if not sp.add_source_from_line(line):
File "/usr/lib/python2.7/dist-packages/softwareproperties/SoftwareProperties.py", line 718, in add_source_from_line
self.set_modified_sourceslist()
File "/usr/lib/python2.7/dist-packages/softwareproperties/SoftwareProperties.py", line 471, in set_modified_sourceslist
self.save_sourceslist()
File "/usr/lib/python2.7/dist-packages/softwareproperties/SoftwareProperties.py", line 635, in save_sourceslist
self.sourceslist.save()
File "/usr/lib/python2.7/dist-packages/aptsources/sourceslist.py", line 396, in save
files[source.file] = open(source.file, "w")
IOError: [Errno 2] No such file or directory: '/etc/apt/sources.list.d//noobslab-themes-precise.list'