Comment 20 for bug 861258

sudo add-apt-repository ppa:tim-klingt/opencinematools
You are about to add the following PPA to your system:

 More info: https://launchpad.net/~tim-klingt/+archive/opencinematools
Press [ENTER] to continue or ctrl-c to cancel adding it

Exception in thread Thread-1:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 551, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.7/dist-packages/softwareproperties/ppa.py", line 95, in run
    self.add_ppa_signing_key(self.ppa_path)
  File "/usr/lib/python2.7/dist-packages/softwareproperties/ppa.py", line 105, in add_ppa_signing_key
    ppa_info = get_ppa_info_from_lp(owner_name, ppa_name)
  File "/usr/lib/python2.7/dist-packages/softwareproperties/ppa.py", line 83, in get_ppa_info_from_lp
    return json.loads(lp_page)
  File "/usr/lib/python2.7/json/__init__.py", line 326, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python2.7/json/decoder.py", line 366, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python2.7/json/decoder.py", line 384, in raw_decode
    raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded