OCTGN

Was playing a game against someone, finished that game and we did reset game to start a new game. When opponent loaded up a new deck when he played a card, we kept getting errors saying this card ID is already in use, in red text.

Not sure if this was b/c his other deck was using the same card as well, and OCTGN can’t read it then? Also noticed when this error occurred he was no longer able to shuffle his deck, as it said he already attempted to do so.