Roger1109 sorry
The map name Tivoli, CN NT 2013.30 includes part of the province of Rome in the Lazio Frosinone + and part of the province of Naples and Caserta in Campania.
Tivoli is the name given to the whole map file from garmin.
Only a part of the regional map gives me error as specified above.
Thank you for your patience.
Chichelli