If the installer does not work for you, you may download all the shaders directly from those who made them.
Roshade
By Zeal.
Reshade-Shaders
By Radegast.
FXShaders
By luluco250.
Essentials
By Crosire & Zeal.
Prod80-Shaders
By Prod80.
Shaders for Reshade
By Daodan317081.
qUINT
By Pascal Gilcher.
AstrayFX
By BlueSkyDefender.