Freezes while dragging animals

Just bought the app. Each time I use it, it freezes while dragging an animal to their spot. This has happened three times on my iPod 2g, and I did restart just in case. It doesnt happen for the same animal, or at the same point, each time. Very dissapointing experience while trying to show this app to my daughter. Have not once been able to get through the whole thing.

Jharperweb about Old MacDonald