Vimeo download fail

[onabil]

First of all many thanks for this useful tool that I'm enjoining for more than 2 years now.
My issue is when downloading a video using this command:
youtube-dl --verbose --title --format 18 --no-progress "https://vimeo.com/99011308" > /tmp/out.log 2>/tmp/err.log
and here is my out.log file:
[vimeo] 99011308: Downloading webpage [vimeo] 99011308: Extracting information [vimeo] 99011308: Downloading webpage
and my err.log file:
[debug] System config: [] [debug] User config: [] [debug] Command-line args: [u'--verbose', u'--title', u'--format', u'18', u'--no-progress', u'https://vimeo.com/99011308'] [debug] Encodings: locale UTF-8, fs UTF-8, out None, pref UTF-8 [debug] youtube-dl version 2015.09.09 [debug] Python version 2.7.6 - Linux-3.13.0-68-generic-x86_64-with-Ubuntu-14.04-trusty [debug] exe versions: none [debug] Proxy map: {} ERROR: No known codec found; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type youtube-dl -U to update. Be sure to call youtube-dl with the --verbose flag and include its complete output. Traceback (most recent call last): File "/usr/local/bin/youtube-dl/youtube_dl/extractor/vimeo.py", line 358, in _real_extract view_count = int(self._search_regex(r'UserPlays:(\d+)', webpage, 'view count')) File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 575, in _search_regex raise RegexNotFoundError('Unable to extract %s' % _name) RegexNotFoundError: Unable to extract view count; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type youtube-dl -U to update. Be sure to call youtube-dl with the --verbose flag and include its complete output. Traceback (most recent call last): File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 660, in extract_info ie_result = ie.extract(url) File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 287, in extract return self._real_extract(url) File "/usr/local/bin/youtube-dl/youtube_dl/extractor/vimeo.py", line 401, in _real_extract raise ExtractorError('No known codec found') ExtractorError: No known codec found; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type youtube-dl -U to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

I installed youtube-dl using pip:
user@lnx-pc:~$ sudo pip install youtube-dl sudo: unable to resolve host lnx-pc Downloading/unpacking youtube-dl Downloading youtube_dl-2015.11.21-py2.py3-none-any.whl (1.1MB): 1.1MB downloaded Installing collected packages: youtube-dl Successfully installed youtube-dl.

[onabil]

I think I'm not able to download any video; I'm having the same issue with a youtube video. I'll check my installation deeply first.

[dstftw]

You are using an outdated version of youtube-dl. Read our FAQ if you have troubles updating.

[onabil]

yes, you are right, I was using an outdated version.
Many thanks