a loading game freezes

[Gwai]

I changed the size of the TOME window, so I had to save and quit my game. When I re-opened TOME, I accidentally opened my mage instead of my rogue. However, as the mage was loading, it froze.

stdout shows many repetitions of an error:

Lua Error: /mod/class/PlayerDisplay.lua:138: attempt to index a nil value
At [C]:-1
At /mod/class/PlayerDisplay.lua:138 display
At /mod/class/PlayerDisplay.lua:154 toScreen
At /mod/class/Game.lua:471