After playing for a few hours following the new update, the game will not save at any point. Not even in town. Had to reload entire game just to load a previous save. None of those (once loaded), will allow a save. I will try a complete restart later tonight, as I sense my presence is required in the kitchen...
Similar for me: I could save in Caer Cyflen after swearing-in and resting but before leaving. I went back to Caer Cyflen before meeting the survivors and I cannot save anywhere in there. Resting at the inn, which usually forces auto-save, does not work.
[edit]
The last viable save was just before the Brimstone Viper fight in Caer Lem. After getting rid of the first trap, I couldn't save.
I did the full Caer Lem run, got back, and reported to the council. Couldn't save in any of that.
Quit to the main menu. I have save files, but the main menu refuses to recognize them and let me load them.
Full restart: Game recognizes save current save files.
I dug into the logs. The only entry I found that looked applicable was:
NullReferenceException: Object reference not set to an instance of an object
at GameLocationEffect.SerializeAttributes (IAttributesSerializer serializer, IVersionProvider versionProvider) [0x0000c] in <baf23251e56741dea480f0820dd09b77>:0
at BinarySerializer.SerializeElement[T] (System.String elementName, T value, Serializer+SerializationOption serializationOptions) [0x002f9] in <baf23251e56741dea480f0820dd09b77>:0
Rethrow as Exception: An exception has been thrown during the serialization of an element of type GameLocationEffect (serialization type: GameLocationEffect)
at BinarySerializer.SerializeElement[T] (System.String elementName, T value, Serializer+SerializationOption serializationOptions) [0x00407] in <baf23251e56741dea480f0820dd09b77>:0
at Serializer.SerializeSubElement[T] (System.String elementName, T value, Serializer+SerializationOption serializationOptions) [0x00111] in <baf23251e56741dea480f0820dd09b77>:0
at BinarySerializer.SerializeElement[T] (System.String elementName, System.Collections.Generic.List`1[T] list, System.String subElementName, Serializer+SerializationOption serializationOptions) [0x0031f] in <baf23251e56741dea480f0820dd09b77>:0
at Serializer.SerializeElement[T] (System.String elementName, System.Collections.Generic.List`1[T] list) [0x00000] in <baf23251e56741dea480f0820dd09b77>:0
at GameLocationEnvironmentManager.SerializeElements (IElementsSerializer serializer, IVersionProvider versionProvider) [0x00018] in <baf23251e56741dea480f0820dd09b77>:0
at BinarySerializer.SerializeElement[T] (System.String elementName, T value, Serializer+SerializationOption serializationOptions) [0x00319] in <baf23251e56741dea480f0820dd09b77>:0
Rethrow as Exception: An exception has been thrown during the serialization of an element of type GameLocationEnvironmentManager (serialization type: GameLocationSubmanager)
at BinarySerializer.SerializeElement[T] (System.String elementName, T value, Serializer+SerializationOption serializationOptions) [0x00407] in <baf23251e56741dea480f0820dd09b77>:0
at Serializer.SerializeElement[T] (System.String elementName, T value) [0x00000] in <baf23251e56741dea480f0820dd09b77>:0
at GameDefinitions.SerializeManagerList[T] (IElementsSerializer serializer, System.Collections.Generic.List`1[T] submanagerTypesCache, T[] submanagers, System.String[] legacySubmanagerTypes) [0x00087] in <baf23251e56741dea480f0820dd09b77>:0
at GameLocation.SerializeElements (IElementsSerializer serializer, IVersionProvider versionProvider) [0x00000] in <baf23251e56741dea480f0820dd09b77>:0
at BinarySerializer.SerializeElement[T] (System.String elementName, T value, Serializer+SerializationOption serializationOptions) [0x00319] in <baf23251e56741dea480f0820dd09b77>:0
Rethrow as Exception: An exception has been thrown during the serialization of an element of type GameLocation (serialization type: GameLocation)
at BinarySerializer.SerializeElement[T] (System.String elementName, T value, Serializer+SerializationOption serializationOptions) [0x00407] in <baf23251e56741dea480f0820dd09b77>:0
at GameLocationManager.SerializeLocation (Serializer serializer) [0x00000] in <baf23251e56741dea480f0820dd09b77>:0
at GameSerializationManager.SaveGame (System.String filepath, GameSerializationDefinitions+SaveType saveType) [0x0026d] in <baf23251e56741dea480f0820dd09b77>:0
at GameSerializationManager.AutoSaveGame () [0x0006e] in <baf23251e56741dea480f0820dd09b77>:0
at GameSerializationManager.Update () [0x00010] in <baf23251e56741dea480f0820dd09b77>:0