Hi Chris. I know this is an old post regarding Emacs Live Browser Interaction. I am trying to replicate what it is shown in the video, but I am not able to. I can replicate the demos till the boids.js one, which by the way is the one I was more interested in… Emacs shows boids.js loaded in the minibuffer, but nothing appears in Chrome. I ran demo1.js, demo2.js and demo3.js successfully. I can see you loaded (or switched to buffer) to demo4.js, same for boids.js and then hit C-c C-k. That command is supposed to load the current buffer (boids.js), but as I mentioned, the minibuffer shows boids.js loaded, and nothing is started in the Chrome tab. Is there anything I can do to troubleshoot it? I am guessing this could be caused by an issue with the browser… Have you recently tested it? Best Regards.