Can't download playlist

[sohamm17]

Here's output:
[~]:youtube-dl -citw https://www.youtube.com/playlist?list=ELOp3B2CJ2Ab4 --verbose
[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['-citw', 'https://www.youtube.com/playlist?list=ELOp3B2CJ2Ab4', '--verbose']
[debug] Encodings: locale 'UTF-8', fs 'UTF-8', out 'UTF-8', pref: 'UTF-8'
[debug] youtube-dl version 2014.02.17
[debug] Python version 2.7.6 - Linux-3.13.0-43-generic-x86_64-with-Ubuntu-14.04-trusty
[debug] Proxy map: {}
[youtube:playlist] ELOp3B2CJ2Ab4: Downloading page #1
WARNING: [youtube:playlist] ELOp3B2CJ2Ab4: Playlist page is missing OpenGraph title, falling back ...
ERROR: Unable to extract title; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output. Make sure you are using the latest version; type youtube-dl -U to update.
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 1511, in _real_extract
playlist_title = self._og_search_title(page)
File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 428, in _og_search_title
return self._og_search_property('title', html, *_kargs)
File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 416, in _og_search_property
escaped = self._search_regex(self._og_regexes(prop), html, name, flags=re.DOTALL, _kargs)
File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 356, in _search_regex
raise RegexNotFoundError(u'Unable to extract %s' % _name)
RegexNotFoundError: Unable to extract OpenGraph title; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output. Make sure you are using the latest version; type youtube-dl -U to update.
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/youtube_dl/YoutubeDL.py", line 493, in extract_info
ie_result = ie.extract(url)
File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 158, in extract
return self._real_extract(url)
File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 1517, in _real_extract
r'

(.?)

', page, u'title')
File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 366, in _html_search_regex
res = self._search_regex(pattern, string, name, default, fatal, flags)
File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 356, in _search_regex
raise RegexNotFoundError(u'Unable to extract %s' % _name)
RegexNotFoundError: Unable to extract title; please report this issue on https://yt-dl.org/bug . Be sure to call youtube-dl with the --verbose flag and include its complete output. Make sure you are using the latest version; type youtube-dl -U to update.

[cryptonaut]

It looks like you're using an old version (2014.02.17). I suggest you update to the latest version and try again.

[jaimeMF]

Yes, you are using an outdated version, you have to upgrade youtube-dl.

[phihag]

Additionally, have a look at this FAQ entry. Why are you passing in -citw? These options don't really make any sense.

[sohamm17]

I downloaded it from the package manager of Ubuntu. So, I guess, that should be updated to the latest version as well. However, I have downloaded the latest version separately, and now I am working with it finely. Thanks! The -citw argument was given here, http://askubuntu.com/questions/376268/how-to-download-entire-youtube-channel-using-commands-or-application .