I double-checked that. But nope, same fight.ash as yesterday (the modifed batmanRE script). I just replaced it with the vanilla fight.ash from this script, and.. THAT is working.
What the heck happened? I swear Bale's suggested edits worked yesterday, and are not working today.
Clearly, this is a PEBCAK. I just downloaded the Batman_RE and then modified it as I thought I did yesterday, and now it's working again.