In two days comes my brother to visit me, so I will use him as a test subject 🙂
I also tried the new drivers 2.16 but nothing changed…well in fact something changed but it has nothing to do with the blinking problem: I noticed that now in the Device Manager under “Human Interface Device” the “Tobii device” and the “Tobi Eye Tracker HID” aren’t listed anymore (I really don’t understand how the Eye tracker 4c can work without beeing detected by the device manager but whatever)