The patches for the base game (Mount & Blade: Bannerlord) are available in the Offline Installer section but the patches for the War Sails expansion are not there so there's no way to download them. If you install any of the Bannerlord base game patches without installing the matching War Sails patch it breaks the game and it will crash on startup.

The only way to make it work now is to completely reinstall the base game, apply the base game patches, then download the updated complete 30GB War Sails expansion and reinstall that.

Can someone please start posting the patches for War Sails as well?