So, I did use the new installer - went back to my account, downloaded and unzipped and ran the file directly from the folder that popper up, so it was the new installer. I went ahead and downloaded again just now, was able to get it to work this time. This time I ran it with the stable version of Gizmo and it worked, so I'm thinking that is the issue. I'm going to give it a try later tonight and try installing again and use the beta to see if it really is the issue or not since I can at least figure out how to get it to work now.
Thanks!