Map problem on Zumo 590LM

Hi -

I’ve downloaded and installed the map of Morocco onto my Zumo 590LM, using the executable and MapInstall. Unfortunalty when I select the new map and try to enter an address, it fails when I enter a city or town name, saying it can’t find it. I’ve tried different spellings for the cities (Marrakesh/Marrakech, Fez/Fes) but to no avail.

Any ideas as to what I should do?

Thanks in advance,