Weird - I see the image here where it apparently did upload. But perhaps I'm the only one, because I've just noticed I still have the "oops...something is not right" message just above the reply box.
Okay, I tried re-saving it with a different name, copying the raw pixels to a whole new image and saving that, but nothing.
I guess it just wasn't meant to be.
I'll try trimming it, and re-sizing it a little - it may just be the way the camera encoded the original possibly? Who knows...