Go in to your Steam Client > Library Find Train Simulator 2021 and click on it On the Right Hand Side is Manage My DLC Click on that and find the Frankfurt High Speed Route Untick the Box for the route then re-tick and it will download the route again If it is the same you need to raise a ticket with the Helpdesk https://forums.dovetailgames.com/threads/reporting-a-technical-issue.31193/
