Doesnt work on my 4GS

I originally bought this app for my iPhone 3GS. I was able to compose and e-mail my contacts to myself with it. However, I just replaced my 3GS with a 4S and installed this app on it for free. Now, I can compose my contact list, but it doesnt transmit when I hit "Send". And Macpapa has no tech support option on its web page.

grsmuggler about iBackupContacts, v1.4