Remember kids
If suddenly something you’re working on starts throwing errors, it’s very likely your fault.
In this particular case I was slamming my head against the wall wondering why this file upload script was always uploading the same picture in subsequent fields. I finally realized I hadn’t made anything unique about the field being polled for the file info, so it would just hit the first match over and over again. Thankfully this didn’t take me a long time to figure out.
This project is probably the most sprawling thing I’ve ever worked on. It’s not bloated, yet, but it is comprised of very many little components. Not as many as, for instance, Drupal or anything else insane, but a lot for a team of one to be managing.