Steam Service Failure Immediately After Loading - Nahverkehr Dresden - Re50

So, I´m doing the Nahverkehr Dresden Journey and in chapter 2 "Settling in" the last two services witch are RE50 Leipzig - Dresden and Dresden - Leipzig are impossible to do since I get a "Service Failure - Signal passed at danger" 3 or 4 seconds after starting the service, I don't even have the master key in neither the train is moving obviously!!!

This is a MAJOR BUG !

 

It's a known issue with this service, in Journey and Timetable modes:

https://forums.dovetailgames.com/threads/nahverkehr-dresden-service-failure-on-loading-in.85743/

I submitted a ticket back in July, so there's at least one bug report for it.

 

Have you tried (for service completion purposes only, the bug report of course still remains) turning off various AI layers?
That message can stem from AI SPADs as well.