Yello!!!

Hey, I have a problem, that I really need to solve as quick as possible. In Maya 7, I made a ball with Paint Effects grass grown all over it. Now, I have a problem with rendering at 300 dpi (I need it for Jumbo poster).

At ressolution 72dpi Maya does ok, but at 300dpi it oonly renders the ball anda the texture, but not the Grass pain effect. Why?

Could it be the wrong way of rendering (softw. render), or the comp is too weak (Nvidia Quadro, Athlon 64 3500+, 1GB ram), or anything else?

Does anyone have the slightest idea, what could I have done wrong?

Thanks for at least reading this