Question about graphic nodes

I had downloaded the Kakariko village map here:

But when I ran it in my game most of it was a bunch of error signs and pink and black checkerboard.

The screen said graphic node outdated or something along those lines. What’s my problem?

Do you have the games it needs?

Yeah I do.

You do not own Counter Strike Source. Go purchase it through the steam content delivery system.

Source? OK thanks. I thought it just needed CS.