[niconico] Unable to extract thumbPlayKey

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• I've verified and I assure that I'm running youtube-dl 2016.09.24

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$ y -v http://www.nicovideo.jp/watch/sm25245044
[debug] System config: []
[debug] User config: ['-4', '-f', 'best', '--prefer-free-formats', '--no-cache-dir', '--no-mtime', '--youtube-skip-dash-manifest']
[debug] Command-line args: ['-v', 'http://www.nicovideo.jp/watch/sm25245044']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2016.09.24
[debug] Python version 3.6.0b1 - Linux-4.8.0-rc5-686-i686-with-debian-stretch-sid
[debug] exe versions: ffmpeg 3.1.3, ffprobe 3.1.3, rtmpdump 2.4
[debug] Proxy map: {}
[niconico] sm25245044: Downloading webpage
[niconico] sm25245044: Downloading video info page
[niconico] sm25245044: Downloading webpage
ERROR: Unable to extract thumbPlayKey; 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/python3.6/dist-packages/youtube_dl/YoutubeDL.py", line 694, in extract_info
    ie_result = ie.extract(url)
  File "/usr/local/lib/python3.6/dist-packages/youtube_dl/extractor/common.py", line 355, in extract
    return self._real_extract(url)
  File "/usr/local/lib/python3.6/dist-packages/youtube_dl/extractor/niconico.py", line 141, in _real_extract
    r'\'thumbPlayKey\'\s*:\s*\'(.*?)\'', ext_player_info, 'thumbPlayKey')
  File "/usr/local/lib/python3.6/dist-packages/youtube_dl/extractor/common.py", line 658, in _search_regex
    raise RegexNotFoundError('Unable to extract %s' % _name)
youtube_dl.utils.RegexNotFoundError: Unable to extract thumbPlayKey; 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.

http://www.nicovideo.jp/watch/sm25245044