Originally Posted by
Norseman
seeing some comments about turn-specific CTDs. in an austrian campaign i had an impassable CTD during the ottoman turn around turn 79 or 80. i suspected it had something to do with the new ottoman expansion script. after turn 78 the ottomans spawn an army if they hold tsepina and it lays siege to sredets/sofya if sredets is not already ottoman and not already under siege. after the following turn that spawned army is supposed to assault sredets, but there are no lines ican see preventing the assault if sredets is already ottoman or already under siege.
in my campaign the ottoman AI had already taken sredets by this time (and tsepina). i solved the CTD by using a diplomat to buy sredets from the ottomans. on the end turn an ottoman stack (which was not laying siege) teleported next to sredets and immediately assaulted it. i auto-resolved a defeat, made peace with the ottomans, and continued my campaign with no further impassable CTDs. the way this played out, i think, confirmed my hypothesis about it being a scripting issue. the script was telling an ottoman stack to assault its own city hence CTD. i haven't checked the entire ottoman expansion script for any other potential CTDs, but hopefully this wasn't coincidence and can help anyone stuck around turn 79/80.
TLDR the ottoman expansion script is fantastic in buffing the ottoman AI to expand more historically, but i think some more lines need to be added accounting for when the ottoman AI has already expanded into certain regions