We are so sorry for the inconvenience about the crash problem that has been happened at iphone 3gs , ipod 3rd , ipod 4th.
It has been occured owing to the lack of memory of those devices. When you reboot your devices it will work better. So please understand just for a moment until we fix this problem. We will do our best to fix it as soon as possible.
We deeply apologize for the inconvenience and thank you for your understanding.