CSS issue when using SubUri and Passenger

I am testing another application in local

in my environment.rb I wrote
config.action_controller.relative_url_root = “/elnino”
config.action_controller.asset_host = “http://opticoaching.local

I defined correctly the vhost (I have already odne it for another app
which is running well…)
<VirtualHost *:80>
ServerName opticoaching.local
DocumentRoot “/Users/yves/Sites/rails/opticoaching”

RailsEnv development
RailsDefaultUser yves
RailsBaseURI /elnino

<Directory /Users/yves/Sites/rails/opticoaching/elnino/public/ >
Options Indexes FollowSymLinks MultiViews
AllowOverride All
</Directory>

opticoaching.local is registered (as usual) in my etc/hosts

executing http://opticoaching.local/elnino, the CSS and images are not
taken in account …

http://opticoaching.local/elnino/
http://opticoaching.local/images/elnino.jpg
http://opticoaching.local/stylesheets/application.css

what could be wrong ?

I already did it for another application without any problem …
cannot find the differences…

thanks for you suggestions

SOLVED … discover some CSS link redefinition missing the relative
URL root !!