AdultSwim - Unable to extract initial data

[geitda]

Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2018.10.29. If it's not, read this FAQ entry and update. Issues with outdated version will be rejected.

• I've verified and I assure that I'm running youtube-dl 2018.10.29

Before submitting an issue make sure you have:

• At least skimmed through the README, most notably the FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones
• Checked that provided video/audio/playlist URLs (if any) are alive and playable in a browser

What is the purpose of your issue?

• Bug report (encountered problems with youtube-dl)
• Site support request (request for adding support for a new site)
• Feature request (request for a new functionality)
• Question
• Other

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If the purpose of this issue is a bug report, site support request or you are not completely sure provide the full verbose output as follows:

youtube-dl --verbose http://www.adultswim.com/videos/the-venture-bros/the-saphrax-protocol
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--verbose', 'http://www.adultswim.com/videos/the-venture-bros/the-saphrax-protocol']
[debug] Encodings: locale cp1252, fs utf-8, out utf-8, pref cp1252
[debug] youtube-dl version 2018.10.29
[debug] Python version 3.6.4 (CPython) - Windows-10-10.0.17134-SP0
[debug] exe versions: ffmpeg 3.4, ffprobe N-91206-g9827bb88e7-ffmpeg-windows-build-helpers
[debug] Proxy map: {}
[AdultSwim] the-saphrax-protocol: Downloading webpage
ERROR: Unable to extract initial data; 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 "c:\python36\lib\site-packages\youtube_dl\YoutubeDL.py", line 792, in extract_info
    ie_result = ie.extract(url)
  File "c:\python36\lib\site-packages\youtube_dl\extractor\common.py", line 508, in extract
    ie_result = self._real_extract(url)
  File "c:\python36\lib\site-packages\youtube_dl\extractor\adultswim.py", line 89, in _real_extract
    webpage, 'initial data'), display_id)
  File "c:\python36\lib\site-packages\youtube_dl\extractor\common.py", line 978, in _search_regex
    raise RegexNotFoundError('Unable to extract %s' % _name)
youtube_dl.utils.RegexNotFoundError: Unable to extract initial data; 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.

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Description of your issue, suggested solution and other information

Does not require authorization credentials. Was working with other similar URLs (e.g. http://www.adultswim.com/videos/the-venture-bros/the-forecast-manufacturer) on 2018-10-23 with 2018.09.10. Tried the above today and neither 2018.09.10 nor 2018.10.29 work correctly.