ios - In App Purchases SKProductsResponse is empty only in iOS 6

Question

I have In-App purchases implemented for auto-renewable subscriptions and they are running absolutely fine in iOS7. All from loading of products to payment transactions, everything is great. But when I run my application on iOS6 the didReceiveResponse method returns an empty response.products and the product id is listed in response.invalidProductIdentifiers. My code is as simple as:

productsRequest = [[SKProductsRequest alloc] initWithProductIdentifiers:set];
productsRequest.delegate = self;
[productsRequest start];

where set is the NSMutableSet with product ids.

Everything is running absolutely fine in iOS7 but not in iOS6. Please help.

Answer 1

あ、iOS6の端末は脱獄してました。Cydia から AppSync を削除したところ、IAP は正常に機能しました。