Azorius Charm Bug

I was playtesting a new deck today when Forge crashed on my no less than three time straight. I was using the Azorius Charm's third Mode, the one that bounces creatures to the top of they're controller's decks, on my opponents attack phase before declaring blockers, and the program crashes consistently after I declare blockers and move into the combat damage phase. The first time it was a plated Slagwurm, but I'm fairly certain that it wasn't the cards I was bouncing that triggered the crash, because it was a different card each time. The Forge edition is 1.4.2, I believe. If You need more than that, tell me how to find it.
Thank you.
Thank you.