youtube-dl v2014.07.11.3: Automatic signature extraction failed

[ghost]

$ youtube-dl -U
youtube-dl is up-to-date (2014.07.11.3)
$ sha256sum which youtube-dl
7b5bcf90f1949b457103d1b4e88825530686fffb483ce649dc9bc04030ef2aa9 /home/user/bin/youtube-dl
$ youtube-dl --verbose -f140 https://www.youtube.com/watch?v=<>
...
...
failed: Traceback (most recent call last):
File "/home/user/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 391, in _extract_signature_function
cache_res = res(test_string)
File "/home/user/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 449, in
return lambda s: initial_function([s])
File "/home/user/bin/youtube-dl/youtube_dl/jsinterp.py", line 113, in resf
res = self.interpret_statement(stmt, local_vars)
File "/home/user/bin/youtube-dl/youtube_dl/jsinterp.py", line 45, in interpret_statement
v = self.interpret_expression(expr, local_vars, allow_recursion)
File "/home/user/bin/youtube-dl/youtube_dl/jsinterp.py", line 58, in interpret_expression
val = local_vars[m.group('in')]
KeyError: u'fo'

ERROR: Automatic signature extraction failed: Traceback (most recent call last):
File "/home/user/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 883, in _decrypt_signature
return func(s)
File "/home/user/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 449, in
return lambda s: initial_function([s])
File "/home/user/bin/youtube-dl/youtube_dl/jsinterp.py", line 113, in resf
res = self.interpret_statement(stmt, local_vars)
File "/home/user/bin/youtube-dl/youtube_dl/jsinterp.py", line 45, in interpret_statement
v = self.interpret_expression(expr, local_vars, allow_recursion)
File "/home/user/bin/youtube-dl/youtube_dl/jsinterp.py", line 58, in interpret_expression
val = local_vars[m.group('in')]
KeyError: u'fo'
; 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 "/home/user/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 883, in _decrypt_signature
return func(s)
File "/home/user/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 449, in
return lambda s: initial_function([s])
File "/home/user/bin/youtube-dl/youtube_dl/jsinterp.py", line 113, in resf
res = self.interpret_statement(stmt, local_vars)
File "/home/user/bin/youtube-dl/youtube_dl/jsinterp.py", line 45, in interpret_statement
v = self.interpret_expression(expr, local_vars, allow_recursion)
File "/home/user/bin/youtube-dl/youtube_dl/jsinterp.py", line 58, in interpret_expression
val = local_vars[m.group('in')]
KeyError: u'fo'
Traceback (most recent call last):
File "/home/user/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 516, in extract_info
ie_result = ie.extract(url)
File "/home/user/bin/youtube-dl/youtube_dl/extractor/common.py", line 168, in extract
return self._real_extract(url)
File "/home/user/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 1249, in _real_extract
encrypted_sig, video_id, player_url, age_gate)
File "/home/user/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 887, in _decrypt_signature
u'Automatic signature extraction failed: ' + tb, cause=e)
ExtractorError: Automatic signature extraction failed: Traceback (most recent call last):
File "/home/user/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 883, in _decrypt_signature
return func(s)
File "/home/user/bin/youtube-dl/youtube_dl/extractor/youtube.py", line 449, in
return lambda s: initial_function([s])
File "/home/user/bin/youtube-dl/youtube_dl/jsinterp.py", line 113, in resf
res = self.interpret_statement(stmt, local_vars)
File "/home/user/bin/youtube-dl/youtube_dl/jsinterp.py", line 45, in interpret_statement
v = self.interpret_expression(expr, local_vars, allow_recursion)
File "/home/user/bin/youtube-dl/youtube_dl/jsinterp.py", line 58, in interpret_expression
val = local_vars[m.group('in')]
KeyError: u'fo'
; 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.

[jaimeMF]

Duplicate of #3255, fixed in youtube-dl 2014.07.15. Type youtube-dl -U (or sudo youtube-dl -U, depending on how you have installed youtube-dl and on what system) to update.