Upfront Not Loading At All - After Spirit Theme Install

I am having trouble with the "upfront" editor not loading on the Spirit theme. It does not seem to load at all when I am on the front end or back end and click the upfront link on the top admin menu.

It was installed directly through the wpmu dev dashboard and it Spirit does show as a child theme.

I was asked to refer back to this post as well: https://premium.wpmudev.org/forums/topic/upfront-makes-beta-introducing-spirit?replies=33#post-816149

Support has been activated on this theme as requested by @Timothy suggested.

Thanks for any suggestions/help you may be able to offer.