Download error

[jonashaag]

youtube-dl 'https://www.youtube.com/watch?v=w2nXrRcWxjU' --verbose
[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['https://www.youtube.com/watch?v=w2nXrRcWxjU', '--verbose']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2014.07.24
[debug] Python version 3.4.0 - Linux-3.10.40-1-lts-x86_64-with-arch
[debug] Proxy map: {}
[youtube] Setting language
[youtube] w2nXrRcWxjU: Downloading webpage
[youtube] w2nXrRcWxjU: Downloading video info webpage
[youtube] w2nXrRcWxjU: Extracting video information
[youtube] w2nXrRcWxjU: Encrypted signatures detected.
[youtube] encrypted signature length 84 (28.55), itag 43, html5 player en_US-vflCGk6yw\/html5player
[youtube] w2nXrRcWxjU: Downloading js player vflCGk6yw
WARNING: Writing cache to '/home/jonas/.cache/youtube-dl/youtube-sigfuncs/js_vflCGk6yw_84.json' failed: Traceback (most recent call last):
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 392, in _extract_signature_function
    cache_res = res(test_string)
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 450, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 179, in resf
    res = self.interpret_statement(stmt, local_vars)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 48, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 140, in interpret_expression
    self._functions[fname] = self.extract_function(fname)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 170, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'Go.sH'; 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.

ERROR: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 477, in _decrypt_signature
    return func(s)
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 450, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 179, in resf
    res = self.interpret_statement(stmt, local_vars)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 48, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 140, in interpret_expression
    self._functions[fname] = self.extract_function(fname)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 170, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'Go.sH'; 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.
; 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.
Traceback (most recent call last):
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 477, in _decrypt_signature
    return func(s)
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 450, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 179, in resf
    res = self.interpret_statement(stmt, local_vars)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 48, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 140, in interpret_expression
    self._functions[fname] = self.extract_function(fname)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 170, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'Go.sH'; 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.
Traceback (most recent call last):
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 477, in _decrypt_signature
    return func(s)
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 450, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 179, in resf
    res = self.interpret_statement(stmt, local_vars)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 48, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 140, in interpret_expression
    self._functions[fname] = self.extract_function(fname)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 170, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'Go.sH'; 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.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.4/site-packages/youtube_dl/YoutubeDL.py", line 516, in extract_info
    ie_result = ie.extract(url)
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/common.py", line 169, in extract
    return self._real_extract(url)
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 848, in _real_extract
    encrypted_sig, video_id, player_url, age_gate)
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 481, in _decrypt_signature
    u'Automatic signature extraction failed: ' + tb, cause=e)
youtube_dl.utils.ExtractorError: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 477, in _decrypt_signature
    return func(s)
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 450, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 179, in resf
    res = self.interpret_statement(stmt, local_vars)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 48, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 140, in interpret_expression
    self._functions[fname] = self.extract_function(fname)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 170, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'Go.sH'; 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.
; 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.

[teffalump]

[debug] System config: []
[debug] User config: []
[debug] Command-line args: ['--verbose', 'https://www.youtube.com/watch?v=YfkVkb_bPMI']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2014.07.24
[debug] Python version 3.4.1 - Linux-3.15.5-2-ARCH-x86_64-with-arch
[debug] Proxy map: {}
[youtube] Setting language
[youtube] YfkVkb_bPMI: Downloading webpage
[youtube] YfkVkb_bPMI: Downloading video info webpage
[youtube] YfkVkb_bPMI: Extracting video information
[youtube] YfkVkb_bPMI: Encrypted signatures detected.
[youtube] encrypted signature length 84 (28.55), itag 22, html5 player en_US-vflCGk6yw\/html5player
[youtube] YfkVkb_bPMI: Downloading js player vflCGk6yw
WARNING: Writing cache to '/home/cz/.cache/youtube-dl/youtube-sigfuncs/js_vflCGk6yw_84.json' failed: Traceback (most recent call last):
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 392, in _extract_signature_function
    cache_res = res(test_string)
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 450, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 179, in resf
    res = self.interpret_statement(stmt, local_vars)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 48, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 140, in interpret_expression
    self._functions[fname] = self.extract_function(fname)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 170, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'Go.sH'; 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.

ERROR: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 477, in _decrypt_signature
    return func(s)
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 450, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 179, in resf
    res = self.interpret_statement(stmt, local_vars)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 48, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 140, in interpret_expression
    self._functions[fname] = self.extract_function(fname)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 170, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'Go.sH'; 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.
; 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.
Traceback (most recent call last):
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 477, in _decrypt_signature
    return func(s)
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 450, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 179, in resf
    res = self.interpret_statement(stmt, local_vars)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 48, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 140, in interpret_expression
    self._functions[fname] = self.extract_function(fname)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 170, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'Go.sH'; 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.
Traceback (most recent call last):
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 477, in _decrypt_signature
    return func(s)
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 450, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 179, in resf
    res = self.interpret_statement(stmt, local_vars)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 48, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 140, in interpret_expression
    self._functions[fname] = self.extract_function(fname)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 170, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'Go.sH'; 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.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.4/site-packages/youtube_dl/YoutubeDL.py", line 516, in extract_info
    ie_result = ie.extract(url)
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/common.py", line 169, in extract
    return self._real_extract(url)
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 848, in _real_extract
    encrypted_sig, video_id, player_url, age_gate)
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 481, in _decrypt_signature
    u'Automatic signature extraction failed: ' + tb, cause=e)
youtube_dl.utils.ExtractorError: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 477, in _decrypt_signature
    return func(s)
  File "/usr/lib/python3.4/site-packages/youtube_dl/extractor/youtube.py", line 450, in <lambda>
    return lambda s: initial_function([s])
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 179, in resf
    res = self.interpret_statement(stmt, local_vars)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 48, in interpret_statement
    v = self.interpret_expression(expr, local_vars, allow_recursion)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 140, in interpret_expression
    self._functions[fname] = self.extract_function(fname)
  File "/usr/lib/python3.4/site-packages/youtube_dl/jsinterp.py", line 170, in extract_function
    raise ExtractorError('Could not find JS function %r' % funcname)
youtube_dl.utils.ExtractorError: Could not find JS function 'Go.sH'; 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.
; 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.

Same here.

[jaimeMF]

This problem is fixed in the last versions (2014.07.25.1 or higher), run sudo youtube-dl -U to upgrade or use the package manager if you installed youtube-dl with it (you may need to contact the maintainers to get the last version).