I've a docbook file like that : Installation Guide when i run forrest and access to my link i have the following error message : Internal Server Error Message: null Description: No details available. Sender: org.apache.cocoon.servlet.CocoonServlet Source: Cocoon Servlet Request URI fox/My_book.html cause org.apache.avalon.framework.CascadingException: Resource not found: file:/home/java/apache-forrest-0.6/src/core/context/divers/revhistory.xml request-uri /fox/My_book.html in fact i've put all my file in : /home/me/www/documentation/content/xdocs/fox/ and in the corresponding subdir you car read in the "main" docbook file. what do i have to do in the My_book.xml to make forrest understand the correct path of each "xincluded" file ? regards.