board title and board description !!!

oh, i see.
try insert the email adress lowercase. otherwise the regex won't match.
hope that helps.

Hmm
Works fine for me...

as far as i can see the email is being sent to the is_valid_email function in includes/email.php
Did you change something there?

@Rickard: what would change if he used a non-english language pack?

The code below return 1, so the only reason for me is that he has another version of the is_valid_email function.

<?php

function is_valid_email($email)
{
    return preg_match('/^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,4})$/', $email);
}

echo is_valid_email("wopio@tlen.pl");
?>

or maybe he changed this part in admin_options.php:

    $form['admin_email'] = strtolower($form['admin_email']);
    if (!is_valid_email($form['admin_email']))
        message('The admin e-mail address you entered is invalid.');

?

What did you change exactly?

hey hey hey
I've found the reason !!! :)my fault ;/ when I'm uploading all files to the server there was an error, and file admin_options.php wasn't send properly. now everything works fine
thank you guys