Salve a tutti,
pasticciando con un plugin, il firewall di joomlahost ha bloccato il mio sito. Dopo aver cancellato tutto e aver installato la versione 1.5.6, prima in locale e quindi in remoto, ho modificato il file configuration.php come da tutorial, inserendovi i dati del db, ma devo aver sbagliato in qualcosa perché mi restituisce questo errore:

Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /home/ucd8uwsw/domains/quasisuff.it/public_html/configuration.php:1) in /home/ucd8uwsw/domains/quasisuff.it/public_html/libraries/joomla/session/session.php on line 413
Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/ucd8uwsw/domains/quasisuff.it/public_html/configuration.php:1) in /home/ucd8uwsw/domains/quasisuff.it/public_html/libraries/joomla/session/session.php on line 413
Warning: Cannot modify header information - headers already sent by (output started at /home/ucd8uwsw/domains/quasisuff.it/public_html/configuration.php:1) in /home/ucd8uwsw/domains/quasisuff.it/public_html/libraries/joomla/session/session.php on line 416
qualcuno sa dirmi dove metter mano?
grazie mille.