I found a minute on my lunch to play. I deactivated all plugins and tried to upload an image and got the http error again. I activated only the plugins that came with the Atelier theme and still got the error.

I was able to upload images under 100k but that doesn’t do me much good when I’m building a photography website and I need the imagery to be gorgeous.

I am still able to upload any file regardless of size if I switch themes, and then when I switch back to Atelier I get the error with the exact same files.

Stumped. I want to cry.