Don't forget the lack of "add-on not in root add-on folder, not executing" and "add-on renamed from what namecheck says, ignoring" restrictions allowing idiots who didn't know how to install add-ons making you download weapon_knife for the tenth time, but this time in the path add-ons/add-ons/add-ons/weapons/add-ons/add-ons/weapon_knife/weapon_knife/weapon_knife/knife/