I don’t run macOS betas anymore since you can’t submit iOS apps from ‘em. Is that why issues like this codesign thing aren’t found?
I can’t speak to all of his other biz stuff but I did watch his casinos closely - they were a complete disaster when he was in charge.
So it appears something in 10.12.1 borked codesign and now building an app takes ~10 minutes. Ugh.