URI problem

[eluser]mathg[/eluser]
Ok it seems that the problem is with my routing.

If I deactivate the rewrite engine in the htaccess and use an url like www.mysite.com/index.php/fr the library is able to get the lang abbr in the URI.

Which means there is something wrong probably with the routing rules. I think the rules are made to be working with the index.php in the url.

Does anyone know how to make it work without the index.php in the url?