Just for the record the problem I had was the error:

"The board administrator has requested that you must provide some message content within your post. You cannot post just HTML..."

The problem was that I constructed the message in WordPad (to copy/paste the error messages from VS). From there I copied and pasted into the post. This time I copied into Notepad first then copy/pasted into the post and all was ok.

Cheers, Peter