The latest Mac OS 12.5 beta (21G5063a) has completely broken Applescript. This simple command
tell application "Finder" to set theDisks to every disk
now returns Finder got an error: Connection is invalid and my Keyboard Maestro scripts like
tell application "Keyboard Maestro Engine" to set theWidth to getvariable "screenWidth"
also break. Similarly
tell application "System Events"
set listOfProcesses to (name of every process)
end tell
which is my bread-and-butter in terms of scripting returns System Events got an error: Connection is invalid.
Halp!!