Systeeminformatie geeft internal server error

Heel vreemd. Dan moet je de error logs van de server raadplegen via het controlepaneel van je hoster of contact opnemen met je hoster. Als er geen foutmelding komt en je blijft een blanco pagina houden dan wordt het voor ons onmogelijk om je verder te helpen.

In de error_log.txt ziue ik het volgende:

Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'dom' already loaded in Unknown on line 0
PHP Warning: Module 'dom' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'dom' already loaded in Unknown on line 0
PHP Warning: Module 'dom' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'dom' already loaded in Unknown on line 0
PHP Warning: Module 'dom' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'dom' already loaded in Unknown on line 0
PHP Warning: Module 'dom' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'dom' already loaded in Unknown on line 0
PHP Warning: Module 'dom' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'dom' already loaded in Unknown on line 0
PHP Warning: Module 'dom' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'dom' already loaded in Unknown on line 0
PHP Warning: Module 'dom' already loaded in Unknown on line 0
Out of memory
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'dom' already loaded in Unknown on line 0
PHP Warning: Module 'dom' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'PDO' already loaded in Unknown on line 0
PHP Warning: Module 'dom' already loaded in Unknown on line 0
PHP Warning: Module 'dom' already loaded in Unknown on line 0
Warning: Module 'dom' already loaded in Unknown on line 0
PHP Warning: Module 'dom' already loaded in Unknown on line 0
PHP Warning: htmlentities(): Invalid multibyte sequence in argument in /var/www/vhosts/17/116192/webspace/httpdocs/bsdecramignon.nl/web/libraries/joomla/html/html/email.php on line 114
[Mon Nov 10 11:37:35 2014] [error] [client 84.30.105.252] Premature end of script headers: php-cgi, referer: www.bsdecramignon.nl/web/administrator/index.php
ed in Unknown on line 0

Edit Astrid: Ik heb de meldingen tussen tags geplaatst, volgende keer graag zelf doen.

Voor zover ik het kan zien heeft het allemaal te maken met de serverconfiguratie. Ergens worden denk ik scripts dubbel aangeroepen in een php.ini bestand.
Webreus staat helaas niet bekend als de meest Joomla-vriendelijke hoster. Maar het lijkt me toch het handigste om dit probleem bij hen neer te leggen.

Bedankt voor het meedenken. Ik ga het bij Webreus droppen.