We had it happen two games in a row tonight so it doesn't seem to have any connection to the number of games you've played. One game, the game ended midway through - it appeared that they quit - and that didn't count either, so I'm not seeing any pattern or connection.
Edit: Three times now tonight! Half way through a game again. Maybe it's promotion/playoff games that are bugged?
We've been having this too, maybe every 10-15 games or so on average. Haven't noticed any pattern to it but we'll get this error and the result won't count.
Been seeing more reports of it since the update yesterday though which is worrying.
