3.0.19205 to 3.420351

I am trying to update a 2016 MKX w/ nav to the most current software. This is the error I am getting.

settings I am using

It seems like there may be a program preventing the updater from reading the downloaded files. Try disabling any antivirus programs while running the app.

The file it is complaining about is from Dropbox likely you are blocking dropbox.