problem downloading with mpsyt

[Emanuel Berg <moasen@zoho.com>]

When I download with mpsyt, I get:

    Problem playing last item: unknown url type:
    '/yts/jsbin/player-vflwcUIMe/sv_SE/base.js'

When I use youtube-dl directly, there is no
problem downloading the same items.

$ mpsyt --version

    mpsyt version      : 0.2.7.1
       notes           : released 6 July 2016
    pafy version       : 0.5.3.1 (youtube-dl backend)
    youtube-dl version : 2017.10.15.1
    Python version     : 3.4.2 (default, Oct 19 2014, 13:31:11)
    [GCC 4.9.1]
    Processor          :
    Machine type       : armv7l
    Architecture       : 32bit, ELF
    Platform           : Linux-4.9.35-v7+-armv7l-with-debian-8.0
    sys.stdout.enc     : UTF-8
    default enc        : utf-8
    Config dir         : /home/incal/.config/mps-youtube
    env:TERM           : screen
    env:SHELL          : /usr/bin/zsh
    env:LANG           : en_GB.UTF-8

-- 
underground experts united
http://user.it.uu.se/~embe8573