Hi all, I'm facing to a problem withe jboss 4.2 and log4j. My application works correctly with jboss 4.3 sp1. But when I deploy it to jboss 4.2, The server complain againts log4j. It seems to me that there is a classloading problem. Here is the stack trace: anonymous wrote : | log4j:ERROR A "org.jboss.logging.appender.FileAppender" object is not assignable to a "org.apache.log4j.Appender" variable. | log4j:ERROR The class "org.apache.log4j.Appender" was loaded by | log4j:ERROR [WebappClassLoader | delegate: false | repositories: | /WEB-INF/classes/ | ----------> Parent Classloader: | java.net.FactoryURLClassLoader@11da1f8 | If someone can help. thank in advance. Meissa View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4056466#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...