... we are really sorry to hear that the game is crashing like that! Unfortunately we haven't been able to replicate this issue in our testing which is why it is very likely that this issue is caused by the TVos 9.2 beta version. We do not officially support the beta versions of any operating systems at the moment which is why I am afraid that we cannot really help you with this issue. You could also try logging out from your Game Center to see if it helps at all.
Sorry for the inconvenience!
Best regards,
...
Rovio Support Team