Just upgraded my Zwift setup to add a Tacx Vortex Smart trainer and using a MacBook Air with OS X Sierra installed. I am getting numerous bluetooth serial error messages popping up on both pairing and during my rides. This is similar to the issue posted here: https://support.zwift.com/hc/en-us/community/posts/205321876-Keep-on-getting-an-error-a-Bluetooth-serial-failure-has-occurred-
I am using the bluetooth connection on my MacBook Air for connecting my sensors and have turned off Bluetooth sensor connection in the mobile link app. I have restarted my Mac and Tacx trainer, reset the MacBook Air bluetooth module, but no change to the problem. Any suggestions to try?