NPO extractor not working anymore.

[MatrixView]

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Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2017.02.28. 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 Issues with outdated version will be rejected.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 2017.02.28

Before submitting an issue make sure you have:

• At least skimmed through README and most notably FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones

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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Since today the NPO extractor is not working anymore. Site/method has changed?

youtube-dl --verbose http://www.npo.nl/2doc/27-02-2017/VPWON_1269142
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--verbose', 'http://www.npo.nl/2doc/27-02-2017/VPWON_1269142']
[debug] Encodings: locale cp1252, fs mbcs, out cp437, pref cp1252
[debug] youtube-dl version 2017.02.28
[debug] Python version 3.4.4 - Windows-7-6.1.7601-SP1
[debug] exe versions: ffmpeg N-67388-g37425fc, ffprobe N-67388-g37425fc, rtmpdump 2.4-47-gc26c541
[debug] Proxy map: {}
[npo] VPWON_1269142: Downloading JSON metadata
[npo] VPWON_1269142: Downloading token
ERROR: Unable to download webpage: HTTP Error 410: Gone (caused by HTTPError()); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type youtube-dl -U to update. Be sure to call youtube-dl with
the --verbose flag and include its complete output.
File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp_o63hpm_\build\youtube_dl\extractor\common.py", line 496, in request_webpage
File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\rg3\tmp_o63hpm\build\youtube_dl\YoutubeDL.py", line 2093, in urlopen
File "C:\Python\Python34\lib\urllib\request.py", line 470, in open
File "C:\Python\Python34\lib\urllib\request.py", line 580, in http_response
File "C:\Python\Python34\lib\urllib\request.py", line 508, in error
File "C:\Python\Python34\lib\urllib\request.py", line 442, in _call_chain
File "C:\Python\Python34\lib\urllib\request.py", line 588, in http_error_default