Thank you very much, the problem was that I had it all in fur_en15a folder (not.zip), instead of having it autonomously in Plugins folder, now it works, thanks a lot and sorry for keeping on at you.

I did but it doesn't work

Thank you, I downloaded it via IE. I put this unwrapped folder 'fur_en15a' in folder 'Plugins' in SketchUp files but it doesn't work. What should I do?

Hi, how can I download this plugin? Probably my browser blocks this.