I was in a co-op game in the middle of a battle. My main character was Charmed, and I accidentally went to the Assign Characters menu. Since my main character was Charmed, she she was absent from that menu, and it kept saying, "Error: Each player must be assigned one main character". There were only three characters available instead of four, and only one main character could be assigned. I couldn't do anything besides close the game and restart it
