Did you not find in this earlier thread:
that you had to make some modifications to your AHK scripts due to the fact that Dorico 4.3.20 is using a later version of the Qt framework than before?
Did you not find in this earlier thread:
that you had to make some modifications to your AHK scripts due to the fact that Dorico 4.3.20 is using a later version of the Qt framework than before?