If you give me FTP access then I can take a look at your files. It appears this is an issue with the second page in your form, so if you attached that I might be able to debug it from here. It looks like you probably have the wrong trigger in your file upload server behavior.
The second error seems like it is probably caused by a leftover include file from a previous version left on the page that can just be removed. If you find the line that references: mailformatting_php.php, you can remove that line. It is no longer used in the most recent version of the email code.