Yes, if you could put a title related to the symptoms it would help people who come looking for a solution in the future.
BTW, for future reference these two messages are not what cause the problem:
TDHenderson wrote:[Content 12:38:14 PM] Trace cBlueprintLibrary.cpp : 392 = Blueprint set not found : Kuju, RailSimulatorCore
[Content 12:38:14 PM] Trace cBlueprintLibrary.cpp : 423 = Blueprint set not found for: Cameras\EditCamera001.xml
They show up all the time even when there is no visible problem in the game.
Usually, missing files are not a big problem, they will either be ignored or the player will be notified, e.g. the game will refuse to play a scenario if some rolling stock is missing, which makes sense. But it will not crash the game.
An existing but damaged file will crash the game, this is the case with the infamous POnTrack.bin file.