[Theme: quindodo] Page Stops Loading (WP 4.5)

We’re testing WP 4.5 in our Development Environment and found that our custom theme is wrecked by the update; more specifically, the page stops loading content but acts as if its still loading after roughly the top global nav, and none of the style sheets are applied. I’m having difficulty troubleshooting the page, so I am looking to the community for further assistance.

Here is the theme working in the production environment – Pre-Update (on 4.4.2):
Theme Working Pre-Update

Here is the theme wrecked in the development environment – Post-Update (on 4.5):
Theme Busted in Update

The Post-Update 4.5 Theme barely loads the page. I think I’ve made the Dev Environment publicly accessible, please let me know if not; either way, you can see what the development environment looks like via the image: <img src=”https://i.imgur.com/aEfCi3b.png&#8221; /> (https://i.imgur.com/aEfCi3b.png)

What I have done:
– Disabled all plugins; did not help issue
– Changed theme; Twenty Fifteen does work
– For this reason, I’m positive it’s the theme.
– Tried Multiple Machines/Devices – same issue across the board
– Cleared Browser Cache, Does Not Help