Would someone mind checking my diagnostics
www.craftunited.co.uk/diagnostics.php
and advising if there is an easy way to sort these issues.
I am very new to this & not sure what I have done to cause so many warnings!
As far as the corrupted files, have you recently moved your site? I have seen where the ftp software can corrupt the files when uploading them to a new server, and it generally happens with FTP software that uses IE. Usually if you switch you FTP client from autodetect to binary, it would prevent the corruption. You can usually see when this happens when it affects your text editors.