I think I have fixed this. Oddly it was browser dependent. I usually use Firefox and the problem didn't show up, but in WebKit (Safari/Chrome) browsers you could land on the wrong URL when adding a new image with the image picker popup.
Please try again and hopefully all is well!
Thanks
Joe
Many thanks. All working smoothly now.
I did notice that whenever I got the "page cannot be found" error message it was always taking me to the home page of the KEHS website.
Laura