I need help installing yafaray renderer plugin.

[giannis196]

I replaced all the blank spaces with a " _ " and it worked

Please, for your own safety, don't do that in the system folders (like Program Files or Program Files(x86)).

you are right, the only reason i didn't had any problem it's because the folder "Program File" was not the system folder, it was just a common folder that created by me and just named "Program Files" (it's not the system folder "Program Files" but a common folder)
so, when i changed the name from "Program Files" to "Program_Files" i had no problem

If that was the system folder "Program Files" i would not change it anyway
(i know what will happen if i do)