TL;DR - Something broke with one of our libraries (or something on our build server) and Hearthbuddy is now crashing on startup. We're looking into what is going on and hope to have a solution soon. However, it might take up towards a day (due to time zone differences with other people in the team) as we try to work things out.
We're really sorry for this inconvenience and thank users for their patience.
We're really sorry for this inconvenience and thank users for their patience.