[bbernardini]

Here's the screenshots. I took them in Safari, but the problem is identical in both Safari and Firefox. Actually, I can't get either one to do the "endless loop" problem anymore, as the upload simply fails, as you can see in the "Manage Attachments" screenshot.

I've cleared the Firefox caches (I know it worked because the "Firewalled" indicator no longer appears), and managed to upload the same show to two other sites. I'm stumped.