playing multiplayer with 3 friends using base expansion. Whenever we would use throne room to double up on an attack card (we had bandit, witch, and militia) the game would crash. Didn't try to reproduce the effect by remaking the lobby, so just continued playing but it would consistently happen with these combinations of cards.

After the game was over tried a single player game with 1 AI opponent and the crash did not happen. A dialogue box did pop up during the crash, but I didn't record what it said.