To configure the GPS, in CacheMate I went to Menu=>Options=>Preferences=>Plugins. I set GPS Location Query to NMEA, which only appeard as an option after I configured the NMEA Serial to Port 04. I have been playing with different baud rates, but it does not seem to matter. I worked with it for about an hour last night, but I did not see any other plugin configuration settings related to BT or GPS.
When I open a cache, and opent the Actions option, the navigate, mapping, and misc options are greyed out.