Impossible to download one particular video

[londumas]

When with other videos it works, with this one it doesn't and gives me this error :

~/hello$ youtube-dl http://www.youtube.com/watch?v=j2Z2yL8RYes
[youtube] Setting language
[youtube] j2Z2yL8RYes: Downloading video webpage
[youtube] j2Z2yL8RYes: Downloading video info webpage
[youtube] j2Z2yL8RYes: Extracting video information
Traceback (most recent call last):
File "/usr/lib/python2.7/runpy.py", line 162, in _run_module_as_main
"main", fname, loader, pkg_name)
File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
exec code in run_globals
File "/usr/bin/youtube-dl/main.py", line 7, in
File "/usr/bin/youtube-dl/init.py", line 536, in main
File "/usr/bin/youtube-dl/init.py", line 520, in _real_main
File "/usr/bin/youtube-dl/FileDownloader.py", line 475, in download
File "/usr/bin/youtube-dl/InfoExtractors.py", line 80, in extract
File "/usr/bin/youtube-dl/InfoExtractors.py", line 405, in _real_extract
File "/usr/bin/youtube-dl/InfoExtractors.py", line 405, in
KeyError: 'sig'

I am running Ubuntu 13.04 and youtube-dl 2012.09.27+dfsg1-1

What is wrong ?

[jaimeMF]

The youtube-dl version you're running is really old, with the latest version available for download it wouldn't work because Youtube did a change two days ago and we haven't been able to release a new version: #1420 (comment). You should update with sudo youtube-dl -U now to get the latest changes and do it again when we do a new release

[londumas]

ok sorry.

Thank you for your work.