Thanks for your answer. Give the add-on a try again.
I finally found the solution.
While uninstalling the add-ons, I accidentlay removed the folder […]/tomcat/webapps/share/components/documentlibray/
Which is the folder needed for rendering the repository/document library.
I managed to find it by looking at the non working page with firebug and the developmenent module from chrome.
Since I spent the whole day on this matter and almost killed myself…It gave me time to explore more the soft and I have to admit that Alfresco is a piece of software, with pretty good community and bug management.
Keep it up.
Rgds