Thanks Matt!
I think I turned off raytraced shadows because the tutorial suggests to do so, however I innocently assumed that it would mean the scanline engine with shadow maps would be used. I have a background using Maya, and so I have habits or expectations that may not apply.
Turning 'Raytrace objects' back on in the render settings did help the grass casting shadows!
To Paq: That actually looks pretty sweet... How did you get it to grow so well? Can you share your settings? With a little color variation, this actually seems like it can be a very serviceable grass system for certain applications. I want to try those settings.
