Been trying to get Google Hangouts video calls to work in Firefox. Text chat workks fine. I've found out about the issue with the video plugin not running on recent versions, and therefore got myself a Portable Edition of Firefox 52.5.3 ESR. However, that's failing in the exact same way as when I ted it in 57. That is, when I try to start a video call, it demands I install th plugin, goes through the motions of installing it and finally says "Installation complete". Hoewver, the wonido that says "Verifying installation..." reaminds open, clicking on the link in it that says "Click here if the page doesn't refresh automatically after install." has no effect, and when I try again to start a video call, it goes back to asking for the plugin.

Any idea if there's any possible way I can get the thing to work? It really would be useful. I'm a bit puzzled, in fact, by why the help article says that the plugin isn't supported in versions 52 or later and therefore you should use version 52 to run it!