Yea, the file was completely missing, so I did a new one and forgot to delete the usual HTML stuff that comes when you create one. 
Furthermore, once I want to login to the Admin Panel, I get this error: 
 
arning: fopen(/is/htdocs/wp1119141_257I7HFKX7/www/acars//lib/js/jquery-front.js) [function.fopen]: failed to open stream: Permission denied in /is/htdocs/wp1119141_257I7HFKX7/www/acars/core/classes/CodonCondenser.class.php on line 95
 
I am sorry for all my messages, but I am pretty new to use scripts connected with a database