Based on several support emails, we located an event synchronization bug related to the flashcard screen especially in the multiple choice section. This was a major issue that we immediately corrected.

Because of this, we canceled the update sent to Apple and submitted a new update. This will take a little more that a week for Apple to approve, but it was our decision to have all crash-related bugs resolved for version 1.1.

Here is a temporary workaround for flashcard crashing:

Wait until all transitions (a card flip, a panel of buttons appearing, a card disappearing and another one showing up) completes.

If you rush through the practice section and tap a button twice or during a transition, it may confuse the application.

Again, we’ve solved the issue, but waiting for Apple to make the update available through iTunes. Thank you for your patients.