With SD card inserted No Voice Directions and Calculating Signal Loop

Hello,

as my title indicates, with an SD card inserted in my 3590 there are no Voice Directions.
When I take the card out I do get voice directions.
Also with SD card inserted for local testing purposes the directions keep Calculating % in Loop.

Base Map is US.
The SD card is 32gb and has full 2018.10 Europe NT map installed.
Europe map was tested with a virtual test ride.
Unit is Garmin Nuvi 3590LM.

We (family and I) are about to embark to Europe and really need to have this hiccup solved.

Thanks for the help!