Hello, I'm using Jboss 4.2.1 GA and here is the structure of my .ear : xxx.ear dir (not a "packaged .ear" but a directory to be able to modify the persistence.xml very easily) which contains : one session.jar packaged file with session beans one entity.jar packaged file with entity beans one persistence.jar dir wich contains META-INF with persistence.xml So, when I'm using the tag to identify the entity classes, I have no problem, but I'm using the <jar-file> tag, I have very very strange results... : - with <jar-file>../entity.jar</jar-file> it searches the entity.jar in the "persistence.jar" dir... - with <jar-file>../../entity.jar</jar-file> the error message tells me : error trying to scan <jar-file>: file: "path-to-persistence.jar/ntity.jar" without the "e" of "entity.jar" - with <jar-file>../../../entity.jar</jar-file> the error message tells me : error trying to scan <jar-file>: file: "path-to-persistence.jar/tity.jar" without the "en" of "entity.jar" So, how can i jump to the "path-to-ear dir" (the parent of the "path-to-persistence.jar") with a relative path ??? Is it a bug in hibernate or jboss ? Thanks, Olivier View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4078285#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...