We have been trying to nail down the reason for the crash on startup, but have been unable to figure it out yet. In the meanwhile, deleting and reinstalling the app seems to resolve the issue. We suspect that it's due to a loading issue with the collection.
Please remember to backup your decks first before deleting the app. You can backup your details using iTunes file sharing:
I must apologize for the inconvenience -- we hope to get it resolved soon.
- Tan Thor Jen