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https://www8.garmin.com/support/download_details.jsp?id=4449 Changes made from version 4.8.4 to 4.8.6: Fixed label rendering with some Unicode maps Fixed issue where certain European Birdseye downloads would fail Fixed Garmin Support weblinks Fixed various crashes and bugs when plugging in certain G...

It looks like I am experiencing the same issue. I am running Garmin Express 6.14.0.0 on Mojave 10.14.5. When I try to manually update from within Garmin Express I get an "update failed" error.

Thanks for taking this on Stu!