I just installed Zwift on Max OS X 10.10.4.
I have a Garmin ANTUSB-m stick and on the bike a Garmin GSC10 Ant+ sensor with magnets.
I have successfully paired the cadence/speed sensor with Zwift. When I start the race it shows my rpms but my rider does not move. It shows 0 power.
How can I get the rider to move? Any advice would be appreciated.