Hi

I downloaded a generic routable map from OpenStreetMap; installed it on my nuvi 1490t in the Garmin directory of the micro sd.
When I view the map detail(on my GPS), it shows the town(s) and street(s) I want to use in the establishing a route. However when I try to input the applicable town/street it gives me a "not found" message.
Can somebody give some suggestions?

Thanks