Crashing after update!

I recently updated my app as the update notes claimed people were having issues with the app crashing. I was not having issues before, but now that Ive downloaded the update my app will not open. It instantly crashes every time I open it or try to open it via the other Knot app. Please fix! I need my guest list back.

Thanks!

Ampiehl about Wedding Guestbook by The Knot