Route Calculation Error. Maps do not have routable roads in this area.

When trying to navigate to start or any other newly set destination I permanently get the following error:

Route Calculation Error. Maps do not have routable roads in this area.

Firmware: Version 9.75

Maps: TopoActive Europe 2025.10 / Trailforks 2019.10

Problem occurs since last map update about 3 month ago. Latest map update of today to 2025.10 has not improved the situation.

The workaround discussed in some forums deactivating popularity maps does NOT improve situation either. Please provide a feasible solution.