Youtube: "ExtractorError: Unsupported JS expression u'$y(a,7)';"

[VorpalBlade]

Trying to download https://www.youtube.com/watch?v=Hm1kUz_Ia2Y gives the following error:

$ youtube-dl https://www.youtube.com/watch?v=Hm1kUz_Ia2Y
[youtube] Setting language
[youtube] Hm1kUz_Ia2Y: Downloading webpage
[youtube] Hm1kUz_Ia2Y: Downloading video info webpage
[youtube] Hm1kUz_Ia2Y: Extracting video information
[youtube] Hm1kUz_Ia2Y: Encrypted signatures detected.
[youtube] Hm1kUz_Ia2Y: Downloading js player mVwz
WARNING: Writing cache to u'/home/vorpal/.cache/youtube-dl/youtube-sigfuncs/js_mVwz_90.json' failed: Traceback (most recent call last):
  File "/home/vorpal/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 369, in _extract_signature_function
    cache_res = res(test_string)
  File "/home/vorpal/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 530, in <lambda>
    return lambda s: initial_function([s])
  File "/home/vorpal/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 525, in resf
    res = interpret_statement(stmt, local_vars)
  File "/home/vorpal/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 460, in interpret_statement
    v = interpret_expression(expr, local_vars, allow_recursion)
  File "/home/vorpal/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 513, in interpret_expression
    raise ExtractorError(u'Unsupported JS expression %r' % expr)
ExtractorError: Unsupported JS expression u'$y(a,7)'; 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.

$ youtube-dl -U
youtube-dl is up-to-date (2014.02.04)

When I called it with --verbose a bit later, it worked however. This is not the first video that had this issue for a while after being uploaded.

[phihag]

Duplicate of #2304. This has been fixed in youtube-dl 2014.02.04.1. Type youtube-dl -U` to update.

[VorpalBlade]

youtube-dl -U still tells me that 2014.02.04 is the latest. Some sort of caching going on?

[phihag]

Yes, GitHub takes time to rebuild the pages. This should be done now. Can you retry? My machines are updating fine.

[VorpalBlade]

Sorry, been out of town for a while. It definitely works now, but that is probably of no help.