I'm experiencing frequent CTDs on the March version when fighting the Poles as Lithuania. In particular sallying out from Twangste and IIRC on some occasion also from Hrodna has resulted in a CTD.
I don't remember any CTDs against Novgorod (or Rus) in this version, be it sallying out, myself besieging or fighting them in a field battle, so for me it seems to narrow the problem towards some Polish or mercenary unit and/or particular battle scenery (mostly Twangste). I haven't paid attention to whether certain troops on the side of Poland have been part of the problematic battles each time - on my side probably yes, but the same unit types I've used against Novgorod and Rus without a problem.
I have applied the LAA and also use kostic's updated EDU. Here's a
save, in which you can test to sally out from Twangste. I just tried it two times in a row, and had a CTD on both occasions before even getting to properly engage in battle. Perhaps 30-40 turns ago I had the same problem when sallying out from Twangste as well. After many tries I ended up bringing reinforcements next to the settlement and ending my turn, which made the Poles back off.
No need to progress the save to the next turn, I just posted the save in case you might find a bug. I'll make a different decision to progress, if the CTDs persist when sallying out.
Here's
full.log and here's
game.log, if the CTD isn't repeatable from the save.