I just checked a third preset called Cetran Chess 1 (which is essentially identical to the ones mentioned before) and it turns out to be working perfectly fine. This one has the following code in the Pre-Game section that those ones lack:
def B cond #0 (cond flag var ss 598 cond == 1 var wstart 598 cond var wstart 124 104) 0;
def b cond #0 (cond flag var ss 598 cond == 1 var bstart 598 cond var bstart 124 104) 0;
So there is no problem to solve anymore and therefore I am infinitely grateful to you both.
Fergus & HG:
I just checked a third preset called Cetran Chess 1 (which is essentially identical to the ones mentioned before) and it turns out to be working perfectly fine. This one has the following code in the Pre-Game section that those ones lack:
So there is no problem to solve anymore and therefore I am infinitely grateful to you both.