Well done! Please drink my beers for me. You may need to add a basemap (gmapbmap.img) for full trouble-free functionality as GarminExpress doesn't supply it: [Only registered and activated users can see links. ].

I think your problem may have been due to a bad sector in region14 where the main system software is stored. If so, hopefully reloading the firmware (software) has isolated the bad sector and the problem won't reoccur.