Not an error, but it seems that
spoiler
finishing the second tome and casting Mass Desire Magic skips ahead of several scenes with Kristen that hadn’t happened yet.
There seems to be repeated exception errors during one of the new scenes, coming up as Exception: Sayer 'student' is not defined, but it seems to be safe to ignore and proceed through the scene otherwise. It still reoccurs each time it tries to call for "student", so it seems like you just missed setting the name for the offensive student during the scene. Outside of that, things have been fine so far, I'll keep looking for anything else that comes up.
Game's great, I've been playing it for days, but since I can't find it anywhere, I'm going to ask- Is there any way to look at the elemental matchups? I've figured out that it seems like every element has 3 weaknesses, but it's not like I can easily test every weakness, and it's something that should really be told to you in game the same way the Vaccine>Virus>Data attribute triangle is.