So, I started looking at fixing the problems. It would appear that the majority of the problems are with the Windows export template for Godot 3.
Unfortunately, the daily builds I was using for Godot currently don't export to Windows due to build errors. I might be able to build my own Windows export templates and I'll update if possible. Regardless, I'll do my best to update and squash bugs as soon as possible, but it might take awhile.
Thank you for your patience.
(Guess that's what happens when you use pre-alpha builds of a game engine :P )