No worries. I've had this happens with other workshop scenarios. As soon as I saw its position in the editor it only took me a couple of minutes to sort.

Hi John,
I had that in the first round of testing, and made the same adjustment.
As the issue did not return, I thought it was fixed.
Sorry for your issues

After making the minor adjustment mentioned above, & refreshing the timetable, scenario ran very well with no problems. Some good AI's about.

Hi. I started scenario, opened doors, set up cab & was waiting for the 'Off' when I got a 'Game over SPAD' without even moving..
I looked in the editor and it is possible the P train rear end is too close to the buffer stops and and fouling the track link for the buffers red light.. Moved it forward slightly and it was then OK.