Well today has been spent fixing #retro #forth on #macOS 10.12.6. It's working on the test server I had spun up this morning (prepping to shut that down now, before I get charged for it...).
The newest build is at http://forthworks.com/temp/RETRO12.dmg.zip or gopher://forthworks.com/9/temp/RETRO12.dmg.zip