Finally there's a way around the 'Error Message' on ff.net! I feel like it's my duty (dramatic I know :p ) to pass along what was 'passed' to me ;) ! I actually found this out a few days ago but life's been busy :p
HERE IT IS: Do what you normally would do to upload a chapter. When you get the error message, replace the _property. with _content. on your browser bar.
That's it! :D