Problem with nuvi 2390 (can't see some tiles)

Dear all,

I downloaded a map consisting of a few tiles of South Africa, and it does not work in my new Garmin nuvi 2390. I can see a few tiles, but not all of them. It’s weird that if I download it to my SD-card again, I can see other tiles from the same map, but never the entire map.
(I tried also generating only parts of it using the webpage, which I guess it runs Mkgmap again, but the problem persists)

These generated maps seem to work fine in my older Garmin nuvi 255, so perhaps it’s just a problem of how the 2390 interprets the maps??

Are any of you aware or have had similar problems??

Thanks in advance!!

Try asking this in the Garmin section.