So, as the title says, TS2020 will flatly refuse to load when trying to run ECML: York to Peterborough. I've ran logmate and this is what it says: 2019/12/14 19:43:08.983 - [Content] - Trace cBlueprintLibrary.cpp : 417 = Blueprint set not found : RailVision, Addon 2019/12/14 19:43:08.983 - [Content] - Trace cBlueprintLibrary.cpp : 417 = Blueprint set not found : RailVision, Addon 2019/12/14 19:43:08.983 - [Content] - Trace cBlueprintLibrary.cpp : 417 = Blueprint set not found : RailVision, Addon 2019/12/14 19:43:08.983 - [Content] - Trace cBlueprintLibrary.cpp : 448 = Blueprint set not found for: RailVehicles\Diesel\Class 142\Default\DMS\142_Engine.xml 2019/12/14 19:43:08.983 - [Content] - Trace cBlueprintLibrary.cpp : 417 = Blueprint set not found : RailVision, Addon 2019/12/14 19:44:23.563 - [Content] - Trace cBlueprintLibrary.cpp : 266 = Blueprint set not found : Blackpatch, BishopsBridge I've no idea what this means, and can't see how it's related to the route. Any help appreciated.
It looks like you don't have a couple of asset packs installed. Try to verify the game's integrity. Take a look at this to see how to do that.