I have a nearly brand-new 920xt, which I sync using a Macbook Pro running Yosemite 10.10.1 and Garmin Express 3.2.28.0. The other day I downloaded 3 apps from the app store and tried to sync them. Sync failed repeatedly. Now when I try to sync, I get the error message "The device being updated is full. Please try again." When I click the Sync button, I get an error popup telling me that "Nearly Old School" (watchface) and "Graphical Heart Rate" couldn't be installed or updated. "To install or update these apps," the dialog says, "you'll need to manage the apps that are installed on your device," but there's no way I can see in Express to do that.
