TRS19: Tutorial 8 fails to run correctly

Hi, completely new to Trainz and have purchased TRS19 Platinum. I am running the built-in tutorials successfully except for Tutorial 8. This tutorial takes the train to a tunnel very early in the run and you can see the track takes an acute direction change in the tunnel resulting in the locomotive being derailed. The final image displayed is the train exiting the tunnel having run into a goods carriage and the derailment message is flashing. I have run it several times and it fails the same way each time. Any assistance would be appreciated.

Someone else may reply with more detail but I recall reading here in the forums that since the later release(s) of software the tutorials have some problems. Sounds like you are experiencing that.