Seamonkey not displaying pix

[Beartooth]

Seamonkey under the last several releases of Fedora Linux does not
display pix. It says, inter alia, "Error: could not load." It also gives 
me a link to Media Viewer; but the help page for that is over my head.

I tried posting via Gmane to seamonkey.user, but have had no 
replies. I tried dnf reinstall seamonkey (with seamonkey not open), but 
that didn't help.

It used to be a good browser. Can I fix it?