Can't view map in Basecamp after installing

I received a map of Costa Rica today. I installed it in Basecamp with MapManager by clicking on the .gmapi file. It then says that the map is installed correctly, but I can’t find it in my Maps menu in Basecamp. I have succesfully entered maps before. Any reason why it’s not working now?

I tried again today with a partial map of UK. Again no succes.
From another website I had the complete UK + Ireland, also a .gmap file. Installed it in Basecamp and there it was.
So what’s the difference between the maps on this site and other .gmap files?
I have installed maps previously from this site, why can’t I anymore?

It’s been 6 months since I downloaded from but when I did the map (of Texas, USA) called itself OSM World Routable.