@dNazarik The current Tobii XR SDK (1.4.1) is tested with SR Anipal 1.0.1. There was a breaking change in SR Anipal 1.1.0.1 where the function IsViveProEye was moved from SRanipal_Eye to SRanipal_Eye_API. To unblock you now, you can make this change manually in your project. There will be a hotfix release of Tobii XR SDK, hopefully early next week, where this has been addressed.