Lakin
When you are on a cracked Primo (you are) the crash message 'maps not found' relates to a file that is only relevant for NavNGo programmers. There is no relation to missing map files (*.fbl).
Theerfor the crash is caused by other issues than missing country maps, but your post don't reveal that issue. Also the same remedy to do first (if the error returns more): first thing to do is always to delete (better is: to rename) the save folder.