Hi,
Under HTTPS Tools:
And enabling "Convert all links to HTTPS when site is accessed over SSL", I received a PHP error about a missing ')' on line 58 of my wp-config.php file.
Checking that file, I found out that it was mistaken and the line above had a missing closing quote.
define('LOGGED_IN_SALT', 'HASH'); # Last single quote was missing.
define('NONCE_SALT', 'HASH'); # Line 58