Installation of version 1.5.1 doesn't work...

Hello !
(sorry for my english, I'm french...)

I'm trying to install Omeka 1.5.1, but when I go to my URL it says "Omeka has encountered an error".
I did this : but it doesn't work too...
Can you help me ?

Thank you ;)

If you're using something like FastCGI instead of mod_php to serve your site, those instructions for getting error messages might not work.

You might have to change the display_errors setting in your php.ini (or add a line like ini_set('display_errors', '1'); to the top of paths.php.

Thank you very much for your answer !
And sorry, I'm very bad.. where is this "php.ini" file precisely located ?
I tried to modify paths.php, but it doesn't work, maybe I have not added the line in the right place...

The location of your php.ini file can vary from server to server (it's a PHP thing, not an Omeka thing).

Humm, I think I can't access to this file in my FTP server...