ERROR: Unable to extract title

[IOAyman]

[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['-ci', 'https://www.youtube.com/playlist?list=PL1C9145FD1FDB3577', '--verbose']
[debug] Encodings: locale 'UTF-8', fs 'UTF-8', out 'UTF-8', pref: 'UTF-8'
[debug] youtube-dl version 2014.02.20
[debug] Python version 2.7.5+ - Linux-3.13.1-031301-generic-x86_64-with-LinuxMint-16-petra
[debug] Proxy map:{'all':'socks://127.0.0.1:8118/','http':'http://127.0.0.1:8118/','https': 'http://127.0.0.1:8118/','no': 'localhost,127.0.0.0/8,::1'}
[youtube:playlist] PL1C9145FD1FDB3577: Downloading page #1
WARNING: [youtube:playlist] PL1C9145FD1FDB3577: 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/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1512, in _real_extract
    playlist_title = self._og_search_title(page)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 428, in _og_search_title
    return self._og_search_property('title', html, **kargs)
  File "/usr/local/bin/youtube-dl/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/local/bin/youtube-dl/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/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 493, in extract_info
ie_result = ie.extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 158, in extract
    return self._real_extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1518, in _real_extract
    r'<h1 class="pl-header-title">(.*?)</h1>', page, u'title')
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 366, in _html_search_regex
    res = self._search_regex(pattern, string, name, default, fatal, flags)
  File "/usr/local/bin/youtube-dl/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.

[dstftw]

Thank you very much for the report. Playlist extraction has been adjusted to cover the latest Youtube changes. This will be available in next release of youtube-dl.