Thanks, heat!
The film was GREAT! One of my favorites, actually. Yeah, I think the popping has to do with the compression used. I used a DBX 160A with about a 2:1 ratio and then I compressed it in my DAW just a little bit more. I like the tone I get, but I need to fix the stuff that arises from double compression.
And the guitar is a flamenco guitar! My Cordoba 45FP to be exact.

Flamencos have more treble and pop than a classical but still uses nylon strings.