Any idea how to fix these signals by Norfolksouthern37?

[ffccnn]

I'd appreciate your help.



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[norfolksouthern37]

remove the contents of the folder TS12\UserData\cache\libraries and restart the game/content manager.

 

[ffccnn]

Thanks. It works. Once in CM, I validated all faulty assets. Back to surveyor, I'm disappointed to find out that all signals disappeared. Not good.