Eric,
I have a problem with the current version... sometimes Flashcard Exchange returns a "blank" card count for a deck, which causes my app to crash. It seems pretty rare, as you are only the 3rd person experience this (assuming this is what is going on for you).
I don't know why Flashcard Exchange would return a blank card count. Do you have any decks that appear "strange", or look like they might not get a card count when communicating with my app? If everything looks fine from your end, consider emailing me your login email and I can tell you which deck is causing the problem. Sorry about that. This will be fixed in the next update.
Ernie
et@orangeorapple.com