Well, I cloned the website into the /dev sub-folder and activated Optimal 1.5 and it’s working beautifully. None of the weird plugin issues or weird media library issues appear. And when I load Optimal 1.2 on the /dev site, all the problems reappear.
It’s just so bizarre by switching to another theme, and then switching back would have such a dramatic effect. How could home.php just not load?!?
Anyway I do appreciate you taking a look.
Thank you!