Hey netleon, thanks for your suggestion. It worked for me as well. I had seen it elsewhere, but also saw about amending the wp-config file as an option, which I did, but to no avail.
Question is, why does it happen? As far as I can see, no changes have been made to the site or the files in any way. Do you know James?
@heavenlytoys, the wp-admin folder should be accessed through the back-end of your site – your FTP account will give you access to this.
