A few weeks ago when i tried to install the beta it didn't work for me, and i saw it didn't for many other with windows 10 either. Today I tried again and after a while I remebered that a few years ago I was instructed to remove the intro video from a mod to make it work. I tried the same with RTRVII and it worked too.
You can find the intro in RTRVII>Data>fmw.
Maybe this is already known, but just in case some people are still struggling with this issue I posted my solution, hope it helps.