With the new update; I've run into an issue with sieges. I'm running the game through steam; plain vanilla, no mods. When I opened a save game from last night I received the following message: Module Mismatch; Do you want to load the saved game with a different module. I hit yes, and the game seems to play no problem.
However, when I or an NPC siege a settlement, once you go into combat the defenders are not there, and you win. Regular combat works ok, just the issue with sieges.
Have to say I'm really loving this game. Keep up the good work.