How have you configured uploading in your HTML Editor instance? Please review the details about the steps you have taken to get this on the page. Also I think it would be worth you trying to add an new editor instance to a whole new page and try uploading with this one to see if there might be a problem with the first one. When you post back with the details please also include the page in question, the HTMLEditor folder, and a copy of the db as an sql file all in a zip archive. This will allow me to directly test your pages with your data.
