Hey adask,
I also got the same error, but instead of closing the browser I went to previous page using back button of my browser (or use backspace key) and submitted again, this time it worked.
The issue I was unable to resolve is "
replacing" an existing image. There is a "cross/delete" button, but sadly it doesn't works.
Another thing (suggestion) is that we should be provided with
Rich Text formatting instead of just plain text. That would enable us to place the
images next to the text (left/right alignment), thereby making the article's look 'n' feel much better than this old school type textbook. I had to change whole of my article's
design due to lack of this and it looks not what I wanted it to be. So this one is badly needed for proper formatting.
Thanks a million to Dukascopy and the trader community!
R