I've had tons of crashing issues with this version. Some that I know of are crashes when blocking, shouting out loud, and speaking to your personal god. These can be avoided, but my current crash cannot: after a period of time, the game crashes without reason. I've tried (T)ravelling and simply moving in one direction as well as waiting and sleeping, but the result is the same.
If it helps at all, the errorlog.txt file in the game directory has this text in it:
loop path fail: <invalid goal> elk,3,17,134 -> -5,12,134: Id #15940:Path Goal Flee from Opponent:Station None at 63,72,131
loop path fail: <invalid goal> wild boar,3,30,134 -> -6,23,134: Id #15988:Path Goal Flee from Opponent:Station None at 26,51,133
path fail: cave blob,11,40,16 -> 20,23,16: Id #16391:Path Goal Flee Terrain:Station None at 11,40,16
path fail: human,63,50,141 -> 63,49,140: Id #15415:Path Goal Adventure Move:Station None at 79,83,140
camp order missing parent -- army will camp forever
path fail: blood man,86,64,14 -> 87,63,13: Id #17043:Path Goal Adventure Move:Station None at 90,66,13
path fail: blood man,95,62,15 -> 96,62,14: Id #17043:Path Goal Adventure Move:Station None at 90,66,13
path fail: blood man,95,62,15 -> 96,62,14: Id #17044:Path Goal Adventure Move:Station None at 90,66,13
path fail: blood man,98,60,15 -> 99,59,14: Id #17043:Path Goal Adventure Move:Station None at 90,66,13
path fail: blood man,99,59,14 -> 100,58,13: Id #17043:Path Goal Adventure Move:Station None at 90,66,13
path fail: blood man,99,59,14 -> 100,58,13: Id #17043:Path Goal Adventure Move:Station None at 90,66,13
Unfortunately, 40.01 has been a colossal failure for me in technical regards because of the crashes. I cannot play (at least in adventure mode) without crashing constantly and for different reasons.