Hi @jraizes, thanks for that. You are using a very old version of the Stream Engine as supplied via Nuget (V2.2.2). Until we update the Nuget repository to match the most recent version (v4.1.0) please download the dedicated source ZIP files from the getting started page @ https://developer.tobii.com/consumer-eye-trackers/stream-engine/getting-started/ and let us know if the issue persists.