I'm brewing tomorrow and I was trying to input the AHS recipe into BeerSmith and it kept crashing. I just had the feeling it was Big Sur because it worked just fine the last time I brewed. The BeerSmith 2 page has it right at the top that it doesn't work and I need to upgrade. I'm not sure I will though as I still have a Mac with an older OS and I'll put it on there. I don't use it enough to make it worthwhile. I can still look at my existing recipes but the calculator/builder doesn't work. Oh well, progress...