That thing with the mirror was really interesting though. If I understood correctly, you entered Bégoniax's house the wrong way (by helicoptering in from underneath, not by teleporting in from the "front door"), which caused the cauldron to get all fizzy – then when you tried to enter the mirror it caused all the teleporters in the house to seize up, both the one at the front door and at the mirror itself. So then when you went back out and tried to enter the teleporter at the front door, it sent you straight inside the mirror, but the cutscene didn't play properly. Then you helicoptered back to the main area again and the game segfaulted.

I guess the teleporters in the house are linked, and using them in the wrong order can lead to, well,
nasal demons… Dunno if it's worth trying to go through all the code with
Raymap to figure out why it does that!
I also found it interesting that the Mawpaws / Paluchards had audible SFX when you flew up close. I guess they were originally intended to be encountered in those states on the ground, and probably not as friendly as they ended up being in the final game…