I have been having quite a few problems with rendering grass, as well as the cleavers that came with the xfrog pack. Grass almost never renders, and when it does, it insists on staying this flat, grey color, no matter what shaders I apply to it. Not only this, but if you do a population with a spacing of less than 2 or so, it not only refuses to render, but also crashes TG2. THe cleavers, I haven't ever gotten to render. Has anyone else had problems like this? please help, it is driving me CRAZY.