Catymag

I copied my internal hardrive on the Nuvi250w to my PC, then deleted the contents and used MapSource to transfer a truncated set of North American maps to the GPS internal drive. The outcome is that I now have a different structure (all the files that used to be in the root directory are now in a GARMIN sub-directory). I then picked up a memory error when turning on the GPS, although the maps did load. I reset the user information by pressing the battery icon while booting (as recommended in one of the tuorials) and the memory error went away.

The GPS picks up the hard drive maps and the local RSA map on the SD card when I check which maps are loaded. However it shows the vehicle icon but no map when I try to navigate. I fear that I have overwritten some vital information, but for the life of me I cannot find guidance in the tutorials. Any help or advice gratefully received.
Les