Hello, I keep trying loading facts by xml based on "Example 3.37. Constructing a pipeline". Now, I encounter a java.lang.RuntimeException when inserting the fact in the working memory: com.thoughtworks.xstream.mapper.CannotResolveClassException: Produit : Produit It guess it comes from the definition of my xml file. In the example, a reference to path/facts.xml is mentionned but I could not found this file. I would like to see an example. Where is it ? Otherwise can someone provide me with an other example ? Regards, Benoît _________________________________________________________________ Découvrez comment SURFER DISCRETEMENT sur un site de rencontres ! http://clk.atdmt.com/FRM/go/206608211/direct/01/