I have a All Europe SD card in my Oregon 450. In BaseCamp I can find and read detail of street names on my computer, but not on the device. Not much use if I can only use it at home!
Is there a way around this problem?
Geoff
Is the card a genuine Garmin one? I've heard that cards from eBay etc can be fake.
City Navigator Maps are locked (copy protected) so if your card is fake you won't see detailed maps but BaseCamp might.
Your description is rather vague. More detail would help.