This is regarding our client who we've just set up on a new 2.7 WordPress, and who has just had his first visitors comment, and all they see is a blank screen when they click 'submit'.
I've checked his comment.php, and the code looks identical to those on our other blogs. I've replaced it with the one from the default theme. I've replaced the "wp-comments-post.php" too, but no help. I can leave a comment if I'm logged in as administrator. Also, if I uncheck the option in 'Settings' to email the administrator whenever a post is left, then it works fine. Unfortunately, that's not a satisfactory situation.
I've spent the last hour and a half searching forums and WordPress Forums for help, but I only see snippets of this problem, and then no-one seems to get it solved. Is this just this one issue, or is there a known fix?
Thanks, Andy & Lucy