Downloading OpenSesame software onto Chromebook using Ubuntu

[mahesh]

I've downloaded the Ubuntu operating system onto my Chromebook and am trying to download the OpenSesame software, but the code from the download website keeps giving me an error. I don't really know how to code and I don't know anything about Ubuntu, but I need this software for my class. The website for the download is https://osdoc.cogsci.nl/3.2/download/#ubuntu and I believe I have Xenial.