Today’s release of BIAB for Windows includes a 64-bit version. I hope this bodes well for the future of the Mac version, where the newest OS issues warnings for 32-bit apps.
64 - bit BIAB for Mac scheduled to be released in 2020
just a joke although i would be grateful if the PG tech team could get it done in 2019 because those " nag " warning message are most annoying when i run Mac BIAB in my macos high sierra 10.13.6