Why do i get a "Route Calculation Error" when load a GPX file?

When you load a GPX file with routes, the app will try to calculate a navigation (line path with turn instructions) for each of the routes.

By default DMD² uses a road profile, so if the route has off-road sections you probably need to choose a off-road profile for that route. To do this click on "GPX" to open the GPX Manager > Tap on the GPX file that contains the route > Tap the "Routes" button > select the route from the list and change profile from "Road Fast" to anything else.

On some cases the GPX file even contains both tracks and routes and you do not even need or want to use the route, in that case, to avoid seeing the error you just need to hide the route that is not calculated.

In this video you can see how to "hide" a route, so that it does not show the error dialog anymore.
In the same dialog you can also see the current selected profile "Road Fast", if you tap on that button you can change the profile.

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