User blog comment:NOBODY/Colour Blind - am I the only one who found it was easy?/@comment-5055855-20130615034336/@comment-3060206-20130616043526

Try purging the page next time by adding ?action=purge to the end of the URL, or uploading the file under the same destination name, but under a different file name on your computer. That might be what NOBODY meant. I find that this is often the case for new versions of files I upload that do not seem to change.