I may (ya think?) have done something tragically stupid.
Edited to add - I’ve made a lot of progress in the last couple of days. I have a simple site with a contact form, sticky site menu, graphics that expand on hover, and an embedded Paypal link, all running fine.
I wanted to reduce the uploaded file count, just for housekeeping. I deleted resources I wasn’t using, and in a fit of possibly misplaced enthusiasm I deleted the Core category.
Now, I don’t see core in new projects.
Time for a re-install? What is safe, in the sense of harming nothing but the currently open project, to delete?
I believe everything is back on the rails again. Impressive, by the way, that I can run with scissors, stick forks in various electrical outlets, and still recover.
Thanks, Dan - re-publish did the trick. I loaded one of the problematic projects, confirmed api was empty, did a republish all files and found api was populated.
On upload, no more missing files errors. All’s well!