Well I purchased the G3 Map package update, Tried to run HomePort.... Nope Called support and was told by a windows attitude user that Garmin was not going to port to 64 bit for Mac
Basically it was go away. I have had Garmin products for 20 years. Current boat GPSplotter, radar, VHF 210 (which can not be loaded into Garmin Express, 3rd party device)
Garmin support is terrible, I hope they update Homeport, not holding my breath.