3.1.1 strange crash

[bebo]

attached is the savefile, i was fortunate enough to do a manual save before i induced the crash - which is not random, it happens every time i perform the following action:

i use 'k' to destroy the priest book, confirm by typing 'y' for yes, then the new prompt asking me if i want to ignore it as a permanent setting or something comes up; at this point whatever i press the game crashes.

pretty weird

EDIT: dev version is 1229

EDIT EDIT: after further testing this seems to happen with any book

[Faust]

Exactly the same thing happened to me with r1231.

Edit: I don't recall it happening in r1225, which was the previous nightly I had.