Just posting this alone because it was a pretty bad bug, Fell straight through the floor in the room above this one and had to full restart because I was completely stuck.
I actually managed to escape with brute force on the left somehow! I made a proper save in the menu, fell in again and tried to load and got this crash. I can send you the save if that would help, but Im not sure where to find it.
Alright, I uploaded a new version with the fixes. You should be able to use the save you made in the earlier version by just copying the "axisThumb" and "axisSave" files to the directory of the new version.