Not possible via clickable options - the stage in the code where it optionally checks for the Source & Dest actually existing (and optionally creating it/them if not, which you're relying on) occurs before the scan (obviously...you can't scan something that isn't there yet). So, it creates the new empty Dest folder, then scans both sides to find nil to copy.
(You can turn off the option to auto-create, but that won't help, because it will obviously simply declare that dated/timed Dest 'not found' and Fail)
Best I can think of right now is make a script (or batch file) and run it via Programs > After, and pass the arguments %COPIEDTOTAL% and %_DESTINATION% to it on the command-line. Set its internal code so that if arg1 = 0, delete arg2
(You can turn off the option to auto-create, but that won't help, because it will obviously simply declare that dated/timed Dest 'not found' and Fail)
Best I can think of right now is make a script (or batch file) and run it via Programs > After, and pass the arguments %COPIEDTOTAL% and %_DESTINATION% to it on the command-line. Set its internal code so that if arg1 = 0, delete arg2