I have more than the usual anecdata, curious when it becomes data. :) Personally, 6 Macs upgraded and I had one problem that was caused by crappy vendor softwa

I have more than the usual anecdata, curious when it becomes data. :) Personally, 6 Macs upgraded and I had one problem that was caused by crappy vendor software which assumed port 8080 would be available for them to use. In the office we finally got the okay to update everyone and 100s of devs are doing fine. There was a homebrew issue that, if you hit it, required a reinstall, but that wasn’t so bad. High Sierra finally kills Python 2.6 in favor of 2.7, and I had an app fail that embedded Python 2.6 pyc files as an obfuscation — 2.7 wouldn’t run them. I worked with that developer to debug and got a new build out — they were receiving many reports of High Sierra issues that were all caused by that. Pretty typical OS upgrade, other than the early stuff — but there’s a reason you don’t upgrade until at least .1 is out!