Garmin Express stalls at the Building stage when updating my nuvi 1370. I have tried two different macs both running Yosemite. Restarted. Reinstalled Garmin Express. Deleted device from Garmin Express and added back in. Tried with 4gb microSD and 32gb microSD. Trying to update both Europe and NA. Have let in run for 18 hours or more. Any help would be appreciated.