Unable to download playlist, youtube-dl version 2014.12.17.2

[ardianta]

Here the debugging output

ardianta@imajinasi:~/Videos/CI$ youtube-dl -ci https://www.youtube.com/playlist?list=PLCp66g_nYHAYbukD2qMmb2ELMaY4quYwPP -v
[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['-ci', 'https://www.youtube.com/playlist?list=PLCp66g_nYHAYbukD2qMmb2ELMaY4quYwPP', '-v']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2014.12.17.2
[debug] Python version 2.7.8 - Linux-3.16.0-25-generic-i686-with-Ubuntu-14.10-utopic
[debug] exe versions: none
[debug] Proxy map: {}
[youtube:playlist] PLCp66g_nYHAYbukD2qMmb2ELMaY4quYwPP: Downloading webpage
ERROR: Unable to extract title; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/youtube_dl/YoutubeDL.py", line 592, in extract_info
    ie_result = ie.extract(url)
  File "/usr/local/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 243, in extract
    return self._real_extract(url)
  File "/usr/local/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 1230, in _real_extract
    page, 'title')
  File "/usr/local/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 499, in _html_search_regex
    res = self._search_regex(pattern, string, name, default, fatal, flags, group)
  File "/usr/local/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 489, in _search_regex
    raise RegexNotFoundError('Unable to extract %s' % _name)
RegexNotFoundError: Unable to extract title; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

[jaimeMF]

You probably meant https://www.youtube.com/playlist?list=PLCp66g_nYHAYbukD2qMmb2ELMaY4quYwP (only one P in the end), the url you used produces an error page.