Updated to Basecamp 4.8.4 now cannot communicate with my Oregon 450

I've updated Bascamp 4.2.4 to 4.8.4 omg my Mac but now basecamp will not communicate with my Oregon 450 gps. Message: GarminDevicev1.xsd not found while this file is in the basecamp app file list.

Basecamp 4.2.4 still works normally when I work with this version.

Used Mac OS: High Sierra 10.13.6.