Procaster won't update and it doesn't have any sound

[Grinder1]

For some reason there is no sound when I stream, and I googled for an answer to that problem, and the Livestream FAQ said if I updated my Procaster that would fix my sound issues. So every time I open up Procaster, I download the update (20.2.69), then it comes up and says "Update failed to start." What's up with that?