hi,
I'm having the same issue as other users have reported, like in http://theeyetribe.com/forum/viewtopic.php?f=28&t=395&sid=edf9aca4c97dbc0434e5d8aa97e210d8. Basically the device is disconnected shortly after UI starts the error message is either:
The Eye Tribe Tracker has been disconnected!
2015-04-10 21:52:08.617 EyeTribe[65678:3221632] CameraControl Error: Control request failed: 00000000
...
[21:52:08.620] ERR: The Eye Tribe Tracker is not supported!
or:
The Eye Tribe Tracker has been disconnected!
[22:09:34.413] INF: Eye Tribe Tracker firmware revision is 203
[22:09:34.413] ERR: The Eye Tribe Tracker must be connected to a USB 3 host!
I'm not sure about the firmware issue, but the eye tracker is listed under USB 3.0 SuperSpeed Bus in my system information.
I'm running os X 10.10.1, with eye tribe server version 0.9.56