Every time I played Possession in a bot game, things broke. I played my extra turn, the bot played its normal turn, but then when my next turn was supposed to start, it just said "Waiting for Lord Rattington" and I couldn't do anything.
Exiting and rejoining the game fixed it until I played another Possession.
Oh...this was already posted in another forum. http://forum.shuffleit.nl/index.php?topic=717.0