Any way, trying another post, so here is a different saddle.
This should produce a small web page with the image in it, if it works.
This one is a Custom made, good shape, but you can see the crease in the kneepad. Take a guess at what someone will pay for that puppy !!!
Well at least something works properly. I plugged that link (xxxx.htm) into the Optional Image URL box, and at least that was rejected as not a "proper image extension" !!!
This will post OK, I can now tell from the preview screen.