Ushi No Tane Forum

I got this game to see if it plays on my iPhone 4. It works fine up until Rowan tells me to plant potato seeds during the tutorial. When I try to, it "freezes" meaning the music is still playing and the sprite is moving in place, but the bottom left hand corner is grayed out and nothing is happening. I can't even move my character. For those that can actually play this game on iPhone 4, how did you get it to work? Is there a workaround?
Thank you in advance