Where are the posts?

For some obscure, technical reason that must have to do with encroaching senility, I seem to have unlearned how to post photos to this site. I get the pop-up, I browse for the photos, I hit the upload button, and then ... nothing. No uploaded photo, just a blank page, and I can't figure out what's going wrong. For the time being, I'm loading photos up to a page on my web site.