Frustrating isn't it! :)
Ok I have altered the path to /home/billeric/public_html/av-files/sermon-attachments/
Still no luck I'm afraid.
This is the link to phpinfo perhaps you could get someone to look at that? Just an idea. As I said, I did ask the hosting providers to take a look at all that stuff and they said that they couldn't see anything obvious but the guy did say that he wasn't a PHP expert so maybe there is something. I can't see how it can be anything else really.
Thanks for your continued support on this.