I’ve been getting 400 errors in my app when I try to use the navigation feature. I thought it was the same problem with null values that someone else reported, but after looking in to it I’m not sure. (It might be a result of the same higher-level problem you mentioned, but it’s definitely manifesting differently.)

When my app receives a response for a GetPlannedTripsByStops request, it looks at all of the service legs and sends a GetShapeBetweenStops request in preparation for displaying the bus route on a map. The problem today is that GetShapeBetweenStops complains that the specified shape_id is invalid, even though it’s just plugging in the one it got from GetPlannedTripsByStops. You can see dumps of both server responses at this gist.