error http 500 : the site is not launched

Hello,

I delete few services of II 7.0 and after, when i launched a site, i've got the following error message :

500 - Erreur interne au serveur.

Un problème est apparu avec la ressource que vous recherchez. Elle ne peut pas être affichée.

I created a new site application on IIS and the problem is the same, i've got an http 500 error.

you can test with the http://www.yomabeh.org .

I'm looking for but i don't find the solution. could you help me.

thanks you.

M.A.