Can't get an addon to work

[doctorjohndoria]

Hi, I downloaded this addon.
[url]http://www.garrysmod.org/downloads/?a=view&id=73084[/url]
and I cant get it to work, it gives me a some error, it says file not found

help plz

[greenbolt]

it cant work because you need another folder T.T

p.s i don't know where the folder is so don't ask