Apple has now got back to us, and while they acknowledge that the iTunes bug which we reported does exist, they do not intend to devote any resources to fixing it. This is disappointing. In effect, Snow Leopard users are apparently no longer being supported by Apple.
So where do we go from here? Well, we do a have a couple of ideas. They should work for Snow Leopard users from a perspective of functioning well, but the question is entirely whether Apple will approve them for sale on the App Store. There are reasons to be pessimistic on that front. However, we will continue to plug away at it until we get an answer one way or the other.
In the meantime we are about to release an update on the App Store, version 2.0.1, containing numerous bug fixes. Version 2.0.1 will be marked for OS X 10.7 (Lion) and upwards, so Snow Leopard Users will not have access to it.
Until the situation resolves itself, Snow Leopard users are advised to contact BitPerfect via our support line.