The quest to save cities from the invasion of the undead has begun (most likely this is the Undeath mod, but I cannot say for sure, because I did not find a clear description for this mod, the second option is Sands of Time full mod). When loading an older message, such an error does not appear, but this is no better, still problems. Briefly: after a crash during a battle and upon subsequent loading of any relatively recent save, an error appears from missing content and a problem.
