Hi
I had the same error as you @joe90wp . The issues I had was that I was missing the imagick PHP module and mod_fcgid in the Apache modules. I have written a short manual here on how to turn it on if you are the admin of your web server.
If you wan’t the non technical workaround that might get you up and running quickly is that you install and use Add from server plugin. That was what I could use until I found my server error.