You are welcome!
I am using the new .41.1 version. I could swear I screencapped the exception but apparently I didn't save it... Something something platform windowshandler and nullreference exception on checkplayerisdead followed by the animations of the player and those imps if I remember right.
I am gonna play a bit more and check if I can figure out what triggers those locks, maybe one of the bars fills completely before they commit the stare match... Other than that, the potion bug simply involves that the current potion does not appear during an adventure. I can guarantee that I have purchased a pot because in the shop I am able to sell it - and I have seen the potion appear during the first adventure after buying the potion, maybe the first adventure after restarting the game... Either way I am gonna test some more and let you know what I find out! Thanks for the work you put in!