video from "skynet.be" (silverlight .ism/manifest stream)

[deathstroke14]

[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['-v', 'http://www.skynet.be/fr/festivals/graspop-201
4/concerts-videos/30588']
[debug] Encodings: locale cp1252, fs mbcs, out cp850, pref cp1252
[debug] youtube-dl version 2014.09.16.1
[debug] Python version 2.7.8 - Windows-XP-5.1.2600-SP3
[debug] Proxy map: {}
[generic] 30588: Requesting header
WARNING: Falling back on generic information extractor.
[generic] 30588: Downloading webpage
[generic] 30588: Extracting information
ERROR: Unsupported URL: http://www.skynet.be/fr/festivals/graspop-2014/concerts-
videos/30588; please report this issue on https://yt-dl.org/bug . Be sure to cal
l 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 "youtube_dl\extractor\generic.pyo", line 545, in _real_extract
File "youtube_dl\utils.pyo", line 1509, in parse_xml
File "xml\etree\ElementTree.pyo", line 1300, in XML
File "xml\etree\ElementTree.pyo", line 1642, in feed
File "xml\etree\ElementTree.pyo", line 1506, in _raiseerror
ParseError: mismatched tag: line 127, column 2
Traceback (most recent call last):
File "youtube_dl\YoutubeDL.pyo", line 524, in extract_info
File "youtube_dl\extractor\common.pyo", line 178, in extract
File "youtube_dl\extractor\generic.pyo", line 890, in _real_extract
ExtractorError: Unsupported URL: http://www.skynet.be/fr/festivals/graspop-2014/
concerts-videos/30588; please report this issue on https://yt-dl.org/bug . Be su
re to call youtube-dl with the --verbose flag and include its complete output. M
ake sure you are using the latest version; type youtube-dl -U to update.