Hi @belinda, thanks for your query. This forum is intended principally for support with the Tobii EyeX and C4 Eye Tracker and associated SDK’s.
Please get in touch with Tobii Pro Support department directly @ http://www.tobiipro.com/contact/contact-support/ who should be able to help you out with your issue regarding the Tobii Pro SDK Ubuntu API.
Apologies for the inconvenience and best wishes.