[0.5.24] Fight with Mistress Matiha (round 2) throwing critical errors

[buffalowings]

I'm attempting to resolve Berwyn's (second) quest and I'm getting an error either immediately upon starting the fight with Mistress Matiha or within the second round. I can sometimes get a round in before the error shows up so maybe it's one of the powers she or the other two units are using that's causing the interaction?

I'm using the standalone .exe player on a windows 11 computer.

Here's the message that's displayed, and the screenshot is attached.

TypeError: eERROR: COULD NOT FIND OBJECT ""is"" is not a function at file:///C:/Users/themo/OneDrive/Desktop/Flash%20player/CoC2/resources/app/583.a7b36390d7c9ce15a8c5.js:1:4576338 at Array.some () at n.value (file:///C:/Users/themo/OneDrive/Desktop/Flash%20player/CoC2/resources/app/583.a7b36390d7c9ce15a8c5.js:1:4576259) at Function.value (file:///C:/Users/themo/OneDrive/Desktop/Flash%20player/CoC2/resources/app/583.a7b36390d7c9ce15a8c5.js:1:1278) at s (file:///C:/Users/themo/OneDrive/Desktop/Flash%20player/CoC2/resources/app/583.a7b36390d7c9ce15a8c5.js:1:1005) at Function.value (file:///C:/Users/themo/OneDrive/Desktop/Flash%20player/CoC2/resources/app/583.a7b36390d7c9ce15a8c5.js:1:9406) at Function.value (file:///C:/Users/themo/OneDrive/Desktop/Flash%20player/CoC2/resources/app/583.a7b36390d7c9ce15a8c5.js:1:5476) at file:///C:/Users/themo/OneDrive/Desktop/Flash%20player/CoC2/resources/app/505.9ae97f3a163e38b96504.js:1:41771 at Array.forEach () at n.value (file:///C:/Users/themo/OneDrive/Desktop/Flash%20player/CoC2/resources/app/505.9ae97f3a163e38b96504.js:1:41729)