[ubuntu] Problem with ubuntu tv

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http://ubuntuforums.org – Hi, as you can see from the title i have problem with ubuntu tv. I have done all what they said http://www.webupd8.org/2012/01/how-t...-from-ppa.html but in 3. step terminal said "bash: /usr/lib/unity-lens-video/create_tmb.sh: No such file or directory". How can i fix that? Do i need tv tuner for running Ubuntu tv? Excuse me if I ask stupid questions i am newbie in Linux Ubuntu. (Hardware)