Hi James,
Tried both and nothing. The images are in my media library and are in the wp-uploads folder as well. They just don't show up on my homepage's post preview.
Here's my site so you can see what I mean: lucythebaker.nyc
The three posts on the side, plus all the ones on the bottom, should display an image from that post.
I still have no idea if this and the mysql error are related.
Thanks, though!