No version of the Tobii EyeX Engine is compatible with the Tobii X1 Light Eye Tracker. The EyeX Engine can only communicate with Tobii eye trackers that can present themselves as a Windows USB-HID and the Tobii X1 Light Eye Tracker is not able to do that.
At the moment the following eye trackers are supported:
– SteelSeries Sentry
– Tobii EyeX Controller
– Tobii REX
– Tobii X2-30 (not X2-60)
– Tobii PCEyeGo (with firmware 1.1.5 or later)