3. Click the box that says "NONE - Opt out of all beta programs" then pick "chromium -"
4. Your game will still stop when loading on that file (resource/fonts/ugficons.ttf ) but if you give it like three(3) to five(5) minutes it should work.
Disclaimer - Upon popular beliefs about using a beta version, when you are running a beta version of Garry's Mod it does not make my game and should not make your game get any lower frames per second(FPS) In addition to that you should not experience random crashes at any time as I have not crashed once using this beta version.