Sorry, just realised that although I'd posted a screen recording in that thread, I hadn't actually posted a workspace or script. Here's a new version

The script don't Panic sets wall clocks for cue "VAMPIRE" and cue "dontPanic" repeatedly, a few seconds ahead of system time
--restart a group cue in a panicked workspace using wall clock timers
-- based on GJR AutoSaver V1 by Gareth Risdale
set myQnumber to "dontPanic"
set theinterval to 1 -- seconds
set t to (time of (current date))
tell application id "com.figure53.QLab.4" to tell front workspace
set mygroup to parent of cue myQnumber
set t to (theinterval) + t
set h to (t div 3600)
set m to (t - (h * 3600)) div 60
set s to (t - (h * 3600)) mod 60
set wall clock trigger of mygroup to enabled
set wall clock hours of mygroup to h
set wall clock minutes of mygroup to m
set wall clock seconds of mygroup to s
set t to (theinterval) + t + 1
set h to (t div 3600)
set m to (t - (h * 3600)) div 60
set s to (t - (h * 3600)) mod 60
set wall clock trigger of cue myQnumber to enabled
set wall clock hours of cue myQnumber to h
set wall clock minutes of cue myQnumber to m
set wall clock seconds of cue myQnumber to s
end tell
The example workspace auto starts cue "VAMPIRE" (settings/general ) when the workspace opens.
If you want to kill the cue then the example has a kill cue called "SILVERBULLET"
tell application id "com.figure53.QLab.4" to tell front workspace
set wall clock trigger of cue "VAMPIRE" to disabled
set wall clock trigger of cue "dontPanic" to disabled
stop cue "VAMPIRE"
end tell
Which can be undone with cue "REVIVIFY"
tell application id "com.figure53.QLab.4" to tell front workspace
set wall clock trigger of cue "VAMPIRE" to enabled
set wall clock trigger of cue "dontPanic" to enabled
start cue "VAMPIRE"
end tell
Demo Workspace attached with a 22Hz Sine Wave Loop in the VAMPIRE group. You can stick anything else in this group that you want to ESCape proof.
Obviously, use with care, and at your own risk and I would suggest putting a prominent note at the top of the Main Cue List to warn users that this is running.
And for completeness I reprint a modified version of the warning in the original post here:
Because this technique just uses standard QLab features in cue lists, it is slightly more acceptable for advanced general use, although I am firmly in agreement with the tenet of QLab design philosophy, which requires that anyone without detailed knowledge of a particular workspace should be able to stop everything by hitting escape!
This rather brilliant technique was conceived by Gareth Risdale, in a script he wrote to keep a script persistent, in order to guarantee automatic saves would be made of a QLab workspace at regular intervals. It worked by programming the wall clock of the script cue to execute the next save, thus rendering it immune to a panicked workspace.
My version is based on his script, but uses much shorter intervals so that a panicked cue will restart in seconds.It also uses 2 wall clocks to eliminate edge cases where the timing of an ESC key press can interrupt the updating of the wall clock on the script cue.
Mic