ok, i found the issue and it should be definitively fixed this time. update uploaded but it won’t work with your save files. sorry!
Yes, I was using 250503. I just made a transcript where the beehive vanishes when going southeast from Streambank to Rocky Grotto. Most capricious. I could almost believe the error is caused by the turn count at this stage. I will gratefully try the newest version, thank you. Don't you worry about my save files. I can make more.