Oops! Resolved now. Somehow, my Security preferences for "Allow apps downloaded from" had reverted to just "App Store" instead of "App Store and identified developers." I switched it back and all is well again. Rookie mistake!

Hi all. So I'm running Mac 10.14.6, and I've been using the Jan 12 2020 Sheepshaver with no problems. I recently saw the March 15 update and decided to try that out. Got this error on attempting to launch it: https://i.ibb.co/2scQtp2/Screen-Shot-2020-03-31-at-4-15-13-PM.png I'm aware that the ROM fi...