Hi @grublixx, sorry to hear about your troubles. This is the first time we have encountered this particular error. Normally the quick calibration call is reliable. It may be worth completely uninstalling the Tobii Software (you can use RevoUninstaller) and reinstalling the latest version which you can download @
Failing that, if you could kindly provide details of your system to see if it’s possible we can replicate the error. Best wishes.
Also, it may be the case that quick calibration may only be ran once a full ‘regular’ calibration is setup for each new profile, please check this out.