Just encountered my first service on WCML whereby I was stuck on a red signal for more than 10 minutes before I gave up the service. Feel free to add other services. 2K02 - held at signal WM336. All trains towards Euston on both the slow & fast lines are held at red!
Did you try to delete any of the stuck trains? Probably explains why we didn't get a full timetable...
You ever get the impression they are adding features such as this as a cheap workaround so they don't need to spend the time debugging the sim? Although, I tried deleting a stuck train causing a permanent red, which seemed to be triggered by photo mode, and it kicked me out of the journey that I was almost at the end of, so it was pointless deleting the stuck train anyway.
Yes I had similar when I tried to delete a stuck train which kind of defeats the point if you spent an hour getting to that point and don't get credit for the Journey. Fortunately on that occasion I was able to get the stuck train going by manually closing all the doors from the freecam view.
Luckily for me I had saved just before trying photo mode, but imagine if it were back in the days when save game also caused permanent reds...