Multiple Maps when Device is connected

Hello there,

If I open Basecamp "without my Garmin Device connected" everything seems to work fine and the 3 maps I want to use are listed nicely, when I check using:

Basecamp > Maps > Installed Maps Info

But as soon as I "connect my Overlander to my Mac" the hourglass starts rotating and it takes quite a while till Basecamp is responsive again!

First I get the following error, but I just confirm it.




But now I've multiple listings of the same map when I check using:

Basecamp > Maps > Installed Maps Info

I also can only use the 1st of the 3 "City Navigator Europe NTU 2023.1 Maps" installed, the other two are just blank.

Unfortunately, I have no idea what's wrong here and a bit of help would be very much appreciated!

Many thanks in advance and have a nice Sunday :-)