Please change includes\functions\functions_email.php line 137 from:

PHP Code:
        if (EMAIL_SMTPAUTH_MAIL_PORT != '25' EMAIL_SMTPAUTH_MAIL_PORT != ''$mail->Port EMAIL_SMTPAUTH_MAIL_PORT
To:

PHP Code:
        if (EMAIL_SMTPAUTH_MAIL_PORT != '25' && EMAIL_SMTPAUTH_MAIL_PORT != ''$mail->Port EMAIL_SMTPAUTH_MAIL_PORT