IAP OR native.showAlert not working on iPod Touch with 4.3.1

We used the latest Corona build to add compatibility with older devices (in addition to the new iPad).

The in-app purchase works on our other iOS test devices (3GS, 4S, iPad1 all with iOS > 5.0).

On our iPod Touch with iOS 4.3.1. when store.purchase is called the pop-up to confirm IAP never appears.

Ideas?
[import]uid: 93150 topic_id: 27203 reply_id: 327203[/import]